The Hull Truth - Boating and Fishing Forum

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Old 04-30-2006, 02:40 PM   #1
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Join Date: May 2004
Location: Brandon, Florida
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Default FF keeping signal - factors?

I have an old-school (but still current) Si-Tex Profish III fishfinder with 200 watts and with bronze thru-hull. To get out from my dock, I have to go through very soft, unconsolidated, silty (not sandy), shallow bottom before I can open er up. I have a great deal of difficulty keeping the bottom in this soft stuff. Once out in open water, I can keep bottom up to 20 knots in a standard, sandy bottom. Most of my stuff is in 30 - 100' of water, so a 1000watt unit seems overkill. I am considering a couple of different fishfinders that have 300 - 400 watts of power. Assuming that my thru-hull ducer is mounted correctly (in the middle, just in front of the transom, no obvious water obstacles), will changing the FF allow me to:

1. Maintain the bottom at speed on sandy bottom. and
2. Find the bottom in soft, silty stuff?
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