[deniseO30]

Aren't there optional transducers for the unit you're thinking about getting many other manufacturers have choices of transducers you may be able to find something with the same operating parameters that actually fits the opening!

 

[deniseO30]

Well assuming the bottom of the boat has a slight curve to it even where the transducer holes are and you will most likely use epoxy and cloth and maybe even g10 on the inside given all that and if the substrate is actually dry it would be pretty hard to fail making an inside overlay plus a feather edge filler with the new hole for the transducer size. I mentioned the curve because there is great strength in curves.