I need to repair a hole in one of the plywood chines on my boat. Made by getting to close to an alligator. I have the entire wood core however I can not get it to flush out with the rest of the panel. It is located along the water line just forward of the front bulkhead. I have tried applying pressure and proper alignment and toothing in of the wood to the original location. However the pressure just flexes the panel. hole is 2"x 3". Any suggestions?