Yeah, I’m planning for the worst... I’m not on any time frame. I’m a carpenter, so none of it looks too intimidating. I’ll try to get some pics up soon.
If it's anything like mine... the main stringers - on both sides of the fuel tank - had originally been glassed. They were completely rotten, but the foam and floppy fiberglass were still holding the floor up. The second set of stringers had just been wood - no glass. Apparently attached to the floor in the factory, then the floor is set in place in the hull. There was some green adhesive on the hull where those second stringers were, but during assembly the stringers never even met that adhesive for most of their length - I think they only served to stiffen the floor. When I pulled it apart, those stringers simply looked like brown dirt. There was a third set of stringers, probably about 3" tall, just about an inch inboard of the sides of the hull. They were also unglassed, and now completely mush.
The transom was so rotten, I tore the inner glass off with my hands, the "wood" core fell out as a pile of brown dirt...
I have a video up of how bad it was here:
https://www.youtube.com/watch?v=UcDtxUo0e-g
Hopefully yours isn't as bad, but then again, if it's rotted at all, it all has to come out. When it's as rotten as mine was, it was easy to pull out!