If I have a soft-spot in the floor of my boat, am I going to have to replace the entire floor with new ply or can that one little spot be repaired? The spot is soft like the wood is beginning to rot...not completely through, but there's some give when you step on it...and it's about the circumference of a soccer ball, and it's over next to the passenger seat where someone riding would put there feet.

Thanks for the help and advice!