I dont think you will be able to put a screw in the side of the boat or through the other side without it going all the way through. Go to facebook and look at some of the current boats in production and youll be able to tell how thick or thin the fiberglass is where youre wanting to place a screw. Below is an example of the thickness of fiberglass around the storage compartment areas. Dont know which boat you have, but all are basically the same.