I am preparing to take the floor out of my 16' avenger... soft spots. Question is, should i try and save teh original peice of plywood for a template or what? And if so how do I get it out in one piece? I will post pics hopefully soon (just got a digi camera). I have looked at share a project and they used a dremel. I am afraid of going too deep and tearing into fiberglass hull. Any help, advice.