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18' Seminole Flats Boat Custom Rebuild

Old 11-06-2019, 05:36 AM
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Default 18' Seminole Flats Boat Custom Rebuild

We found this hull in the weeds behind a building I was looking at a couple years ago and went through the lost/abandoned boat process. A friend bought the hull and a couple years later, here we are! Brought it in the shop last week for the deconstruction process. The hull is a 1996 Seminole Marine flats skiff, later puchased by Sailfish. Its a solid hull, had a little transom issue and some soft core areas on the cap. I think it was originally a freshwater boat but we are going to build it as a flats boat.

Basic plan - re-core, fill holes, modify the cap a bit, new tank, new deck, new rigging, new paint. Everything new except the running surface!

Cap and console will *probably* be Awlgrip Matterhorn White.
Hull will *probably* be Awlgrip Medium Gray
Tank will be a 35ga Moeller poly tank. First time using a poly deck in deck but I think it will work well on this project.
Probably will be some JL Audio in her, maybe 2x 8.8s and a sub? Single GPS
Bobs or Atlas Jackplate, not sure which yet.
Power will be something in the 150-250 range. I've read that a 150 makes it a mid 50mph boat, owner wants it faster though. A 200 Optimax or 200 HPDI would be a great option.

Take a look, updates will be on here, on Instagram (@markgorges), on Facebook (www.Facebook.com/GorgesBoatworks), and a little on the website (www.GorgesBoatworks.com).

I haven't found a lot of information on these hulls, if you have thoughts, comments, questions, or concerns please chime in! Superglue works great if you razor knife your knuckle FYI.











Last edited by CaptGorges; 12-02-2019 at 03:15 AM.
Old 11-06-2019, 05:46 AM
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I was having a cup of coffee with the owner of the project and said, I think if we are going to make this a rocket ship, we need to make the lines a little more aggressive. 5 minutes later, she looks more aggressive!

One of my favorite things in this business is the look on somebody's face who doesn't do fiberglass work when you first pull out a couple saws, a 5lb hammer, and a crowbar and walk to their boat. They know in the end it will be great, but nobody likes seeing a saw heading to their boat! I, on the other hand, love it because its the start of it becoming a custom project and not just another boat.

I think the angled bow looks much better and will open up room in the deck for activities. Plan on mounting a speaker in each side, maybe build in some tackle storage in the front part.

The boat had plywood core glassed into the hull in a couple places that was soft, I think from research it was where the bass boat style chairs mounted. it was rotten and we don't plan on bass fishing so the remaining wood was dug out, replaced with Divinycell H60 and covered in several layers of chop.










Old 11-07-2019, 08:33 AM
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Looking good so far
Old 11-14-2019, 09:10 AM
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In my humble opinion, that hull won't handle a 200 or bigger. It'll squat too much to be an effective flats boat. I'd go with a 175 VMax, if you want a little more power. Than, look into a computer flash. Same weight as the 150 with a little more punch before a reflash. Or, you could go with a 175 OptiMax Pro XS. The hp in those XSs were always underrated.

Looking forward to the process.
Old 11-14-2019, 09:14 AM
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sub'd

looks like a fun build
Old 11-14-2019, 04:51 PM
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Originally Posted by TurnMeLooseFLKeys View Post
In my humble opinion, that hull won't handle a 200 or bigger. It'll squat too much to be an effective flats boat. I'd go with a 175 VMax, if you want a little more power. Than, look into a computer flash. Same weight as the 150 with a little more punch before a reflash. Or, you could go with a 175 OptiMax Pro XS. The hp in those XSs were always underrated.

Looking forward to the process.
The 200 weighs 487, the 175VMAX weighs 480. We load tested (in the water with no gas tank) up to 555lbs. Very little attitude change between 400lbs and 555lbs. Plus, the owner isnt worried about an inch or two of draft, he wants a rocket ship.
Old 11-14-2019, 05:54 PM
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A 300 opti weighs 505lbs. Just saying. I'll be following along. Bow looks great now. Giving me some future ideas on mine
Old 12-21-2019, 03:19 PM
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Made a little progress here and there. Raised the deck 3.5" to fit a Moeller 37ga poly tank, will also be making drains out of the side to keep her bilge dry. 2x4s in a boat? Yeah my thought too but for the weight/cost/ease of installation, they made the most sense. Deck is Divinycell H60, single layer of 2400 on the bottom with 1708 tape on the joint, top will get 2 layers of 2400.

Setting up all the fuel and rigging stuff this weekend, hope to epoxy the deck down next week and tab in the deck. Front panels need to be trimmed because we didn't originally plan on raising the deck.

After that, we finish reinforcing the transom for a 450R and fabricate hatches, then it's Awlgrip time!

Also threw in some photos of a SCB we painted last week, might do a similar scheme on this boat.











Last edited by CaptGorges; 12-22-2019 at 07:37 AM.
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Old 12-23-2019, 07:31 PM
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Glued the deck in today and finished boxing in the rigging tube, which I apparently didn't take photos of. But on top of the PVC pipe there is a rectangle of H60 glassed in that will mate with a cut out in the deck. Approx. 2.5x6 hole for all rigging. Put approximately a half inch of cabosil peanut butter thick West Systems epoxy along the tops of all the stringers we raised and the ledge we built into the hull sides then screwed the deck to the stringers with 3in drywall screws and washers.

Will pull the screws when I get back in town, finish the front panels, 1708 tape the deck to the hull sides then lay down another layer of 2400. I don't honestly think it needs more glass but it won't add much weight and will be much stronger.

Installed the fuel vent, had to make a new hole though as we went from a simple vent to a Attwood p-trap style vent to keep water out of the tank. Looks sloppy because it's all getting sanded off and I threw waxed gelcoat into the rest of the resin to make sanding easier.

Will start fabricating the hatch lids when we get back in the shop in the New Year as well.






Old 01-05-2020, 06:41 AM
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Pulled the screws, filled the holes (dripped in resin, faired the tops) and moved on to the next steps.

Drilled 1.5in deck drains out of the sides versus the old ones that went into the bilge. Our deck is almost 4in higher than the old one, so it's easily self bailing. Hole sawed through at a 45 degree angle, trimmed PVC pipe, sanded the inside of it, faired and glassed the tubes in place. To glass the scuppers/drains in place I stuck them in covered in fairing compound, ground that smooth. Coated the interior of the pipe in resin with a small chip brush, cut strips of glass, put them through the scupper with a mixing stick and then faired as best I could. End result is about 3 layers of glass holding them in place. PVC is the best thing to glass to but the inside was roughed with a 36 grit flapper disc and with all the glass it doesnt have a way to move. I'm pretty happy with the end result.

Tabbed the deck into the hull sides, tabbed in the new front pieces, faired the edges, will finish glassing and fairing Monday. Hatch fabrication is going to be the next step. The original manufacturer for the hatches doesn't exist anymore, plus I like making hatches.

If the weather holds, I'm expecting to try and paint the topside this week.








Old 01-06-2020, 07:22 PM
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And its starting to look like a boat! Base coat of gel went on today, final fairing tomorrow before primer.

Fiberglass hatches came together pretty well, will pull them off tomorrow and trim for installation.








Old 01-07-2020, 02:15 AM
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Looking good, enjoying watching this come together.
Old 01-07-2020, 06:22 PM
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Hatches coming together, didn't take photos but the cockpit is ready for primer and the last glass work is done, added some support to the transom.

Hatches were very solid but only weigh a pound or so each. Added one more layer of 1708 to the edges just to be sure. Didn't put mold release on on the melamine so they didn't pull off perfect but we are priming and painting everything so I wasn't too cautious. Overall, pleased with the results, will probably gel coat the undersides of them tomorrow.







Old 01-08-2020, 03:55 PM
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The road goes on forever and the fairing never ends. - Robert Earl Keen

Tomorrow, tomorrow, she'll be fair tomorrow - Little Orphan Annie



Old 01-14-2020, 05:35 PM
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Its prime time! Got a couple coats of Awlgrip 545 on the hull sides, cap, and deck today!





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Old 01-25-2020, 09:21 AM
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The painting is beginning! Awlgrip Topcoat in Matterhorn White. Wants it is cured we will tape off a nice edge for non skid and then put a couple Coats on top of that.








Old 05-06-2020, 06:34 PM
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A few months have passed and here is a little progress for everybody. Matterhorn White trim, Medium Gray hull sides, and a 10:1 Matterhorn/Medium Gray non-skid. The deck material is knockoff SeaDeck that I have had good luck with on other projects. $50/roll for the win.

Hope to mount her jackplate, console, Yamaha 150SHO, and the deck material in the near future.

d







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Old 05-22-2020, 05:47 AM
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Making progress! I think the 150 looks small, now looking for a 250 to strap on.



Old 06-12-2020, 07:05 AM
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Rigging is almost done on the flats boat (final product not pictured apparently, it was 11PM) ! Finishing up a few little things and then its sea trial time!!!

https://www.gorgesboatworks.com/cust...lats-re-build/




Old 06-13-2020, 04:36 AM
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I like the zip tie to the speaker with the wire. That's a great idea!!! Is that speaker wire though or is that power wire for the lights in the speakers?

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