I have a 16' fiberglass boat with a mushy floor. The mushy section is about 2'x6' in which the wood underneath the fiberglass is rotted. I was wondering if this needs to be replaced, or if it is just something I could deal with for a while and have it replaced later. I have talked to one boat repair company and they estimated the repair at 4-600 if it is just that section and around $1200 if it is the whole floor. If it needs to be replaced is this something I could do myself or is it best left to professionals.<br /><br />Thanks in advance.