Mounting a transducer on a dory??? help

[CrazyFish]

My boat is a 21' wood dory with the forward motor well. I mounted the transducer on the back of the boat but the signal dies after about 10mph (I think since the motor is forward of the transducer).

I'm thinking of 2 options to fix this:

1)Mount the transducer in the motor well, but this would put the transducer within a few inches of the motor. So I'm not sure how this would work.

2)Trying a through hull transducer. So far what I've read about mounting a through transducer they only work through solid fiberglass. My hull is made up of 2 layers of plywood and paint.

The FF is a Garmin 160 Blue and I know that it worked great on my last boat at high speeds.

Has anyone run into this before and if so what is the fix.

[Mr. Fisherman]

Try getting it deeper in the water also check to make sure it is out of the prop wash. If it is behind (on the discharge side) of the prop you may need to find a mount elsewhere. If you are beaching you might be able to rig a slider to lift it up before you hit the beach. It sounds like turbulance may be disrupting the signal but I am speaking without knowing anything about your current setup. My 22' C-Dory's DF works great at speed, unless a stick or something gets stuck in it... :shrug:

[ 03-21-2003, 09:32 PM: Message edited by: Mr. Fisherman ]

[Fish Hawk Adventures]

I have a 22' Wilson Dory named OSPREY. We have had our best luck with the transducer located in the motor well and placed on the far outside of the well as you can go and as far up front as you can get it. I have commercially fisher for 13 years and in rough water and once you get above 15 or so miles per hour you will have to forget about it. A Dory is flat bottomed and there is too much turbulance for the transducers when going fast. Good luck and remember you are in one of the best built boats ever made for rough water. I have been through 20' plus surf and we have filled the boat up with water to the brim many times, She has never been lost, if you know a dory there is only so much water you can get in them (about Knee Deep) then the water runs out the motor well if you are under power.