Hi - I'm a newbie.... so, there's no dumb questions, right? So, why does my 1960 sunfish seem to weigh a TON when the spec have listed weight @ 100 lbs.? I think I had some animals nesting inside the boat for a year or 2 and there may be some rather large nests. How do I clean the inside of boat without taking off the top or drilling holes? I'm ready for suggestions. THANK YOU