Quote Originally Posted by WaterBullDawg1980 View Post
This may be a dumb question, but those that have made custom amp racks, what are you screwing these racks into in the inside wall? How can you be sure not to drill straight through the gel coat?
You have to find the extra thick joints where the top and bottom of the boat get fused( technical term) DO NOT SCREW DIRECTLY INTO THE SIDE WALL(AKA HULL)

FWIW I used 1/2 plywood treated 3 to 4 times with clear thompsons watersealer and carpeted with regular sub carpet.
shim amp board up 1/2" with scrap piece and screw into weld.