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transducer issue

Old 08-19-2020, 07:36 AM
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My transom mount skimmer transducer came with the boat when purchased. I loose bottom when I reach speeds of 11mph or greater. The boat is a 2006 hurricane 237 and it has the "stepped" transom (not sure what it is officially called). The keel and the drain plug are 12 inches or so forward of where the motor hangs .

My transducer is mounted on the transom behind this little "step" I'm wondering if this is generating enough disturbances that are creating my problem. My understanding is that should either move the transducer to the stepped area by my drain plug (12 inches under the boat) or move the transducer more to the right to an area where the step is no more. i hope this makes sense. took a picture to help.

I want some opinions before i just start drilling holes into my transom. I have a obvious mental block with drilling holes under the water line without certainty



Old 08-19-2020, 08:40 AM
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The transducer is most likely out of the water while on plane. It needs to be moved down by the drain plug. Over to the starboard side as far as you can, the better. Make sure there arent any thru hulls or chines in front of the skimmer that will create turbulence
Old 08-19-2020, 08:43 AM
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What ktroyer2265 said. Also, get yourself some starboard and 5200, glue it to the hull, and screw into that. Try to avoid making more holes in the transom and make sure you properly plug the holes you leave behind when you move the transducer.
Old 08-19-2020, 08:49 AM
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Originally Posted by ktroyer2265 View Post
The transducer is most likely out of the water while on plane. It needs to be moved down by the drain plug. Over to the starboard side as far as you can, the better. Make sure there arent any thru hulls or chines in front of the skimmer that will create turbulence

would you recommend basically lowering it right where it in relation to the starboard side so it would be on the upward rise of the hull? or would you mount it as far starboard on the horizontal section oh the hull before the rise?
Old 08-19-2020, 08:51 AM
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Originally Posted by Lorne Greene View Post
What ktroyer2265 said. Also, get yourself some starboard and 5200, glue it to the hull, and screw into that. Try to avoid making more holes in the transom and make sure you properly plug the holes you leave behind when you move the transducer.

Ive heard mixed feelings about glue. will the 5200 really hold to the bottom paint? I'm a big fan of no new holes
Old 08-19-2020, 11:14 AM
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The first thing I would do is take it out with a friend. Get it on plane, and then go back and look at the transom. The transducer should be skimming the top of the water, and the water should look pretty ‘clean’ (few bubbles and turbulence). If the water to too broken up you will need to move your transducer forward. If the water is fairly smooth coming off the back of the boat you can try moving the transducer up or down just a little to see what happens.
Old 08-19-2020, 12:06 PM
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Originally Posted by tommyjones View Post
The first thing I would do is take it out with a friend. Get it on plane, and then go back and look at the transom. The transducer should be skimming the top of the water, and the water should look pretty ‘clean’ (few bubbles and turbulence). If the water to too broken up you will need to move your transducer forward. If the water is fairly smooth coming off the back of the boat you can try moving the transducer up or down just a little to see what happens.


i like where your heads at.....I'll start with this

i have some Poly board in the garage ....and a tube of 5200 on its way...just in case

thank you all

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