Grand Banks 32 Hull Thickness?
Does anybody know the hull thickness of a 1990 (fiberglass) Grand Banks 32, near the centerline and to one side of the engine? I have installed two in-hull depth transducers and neither works right. They are supposed to be able to shoot through the hull, but either the glass is too thick or there are voids in the glass (Heaven forbid!). I have also posted this query in the Grand Banks Owners Forum but, frankly, I think many more GB owners participate in this forum!
Thanks in advance.