I have a 1987 Ericson 35 MKIII The bolts that hold my motor mounts have stripped the fiberglass bed. I would like to drill 3-3inch acesss holes in the sides of the bed and install through bolts with backing plates to hold the mounts in but am concerned about weakening the moter bed. the sides where I want to drill the holes seem thin and dont' seem to be structural. Has anyone fixed a similar problem? any suggestions?