Welcome aboard illusion! If part of the sole is soft be very careful. There is probably more. I think your deck is balsa cored, I'm sure seabob will chime in and I think he probably built your hull! To replace the floor is a big project especially on the newer hulls because of the liner configuration. In other words IMHO 13k is too much. Pics would help, start a photobucket account and follow rickks directions to post. Where are you located? If you have any doubts hire a surveyor to find out a real price and condition.