Heya Garret & Scott,
Thanks guys.
Garret, here is what I do for the transducer install. My sounder won't shoot through the ply properly so I sand a patch of ply, about the same size as my transducer allmost right out and then fill it with epoxy/woodflour
The rule is a 6 inch one to give an idea of scale.
Then, I cut a piece of 3" poly-pipe, 2" long and fit it to the shape of the boat's bottom
I stick it down and seal it with silicone

(not done yet)
the transducer sits in the pipe like this.
And is held in place with a cut piece of pool noodle.
Yo make it work, I then pour about a cup of water into the pipe and the transducer shoots right through the hull beautifully.
