I Had a custom made trollwell or recessed box or tray for my TM pedal made and about to dive in make a cut on the front deck of my 1991 Sabre. I think I recall Basscat saying one time long before they did not recommend this on a 91 Sabre...but maybe I dreamed that? My tray is a bit smaller than any thing you can buy, which is what I wanted as my Sabre deck is a bit tight. (Although I have a new flipping deck to carpet and install as well this winter!)...but anyway, am I completely screwing up here if I cut a hole in my deck or am I drastically jeopardizing the strength and integrity of my boat? Also, what Can I expect to find when I make the cut...Foam, any cross support sections???? thanks!