casting deck help

I've got an 18V90. It came with the casting deck mounted in the back. It has its usefullness but it makes accessing space under it a pain. So I took it out. Trying to figure out if I could modify it and put it back so that I could swing it open/closed kinda like a huge decklid. It is very...

has anyone done or have any information on securing geofoam for a base on a casting deck? Will be topped with plywood so I can put a seat on the front of my 16’ stumpknocker. First boat always wanted to customize one for myself that maybe my son would want to keep someday. I use geofoam in...