Okay, so that keelson didn't want to come out. All of the rotten part came out easily, but about half of the aft keelson is still in tact, and it's not cooperating. And because of it's location (between two berth supports) there is no way to get close enough to it to use heavy tools like a grinder to remove it. So I spent about half an hour with a hammer and chisel trying to chisel it out. Very slow going and it really twinged my back. Mom came up with the best idea so far for getting it out - cutting it up into small squares with the dremel to make the chiseling go quicker. Ugh. So I can just scrap that part about having the keelson out in one day. Ha!
Also, I spoke prematurely when I said there was still one piece of good wood in the boat. When we removed the berth tops, revealing the bottoms of the main bulkhead, we poked with an icepick and found good wood there. I guess we never checked the other side, though. Well, we checked it yesterday. And there is a big spot along the bottom that is rotten. So it will have to be replaced. It had to come out anyway in order to replace the transverse support underneath it. The main bulkhead in Wahoo is actually two pieces, so I guess technically, one piece of wood in the boat is still good. :D
Actually, that's not completely true. The berth supports appear to be okay as well. So that's three pieces of good wood. And I lost count on how many bad peices of wood. Who could count that high? :D
Also, while working on the keelson I noticed the missing cockpit support. When I got the boat there was nothing supporting the cockpit - the main bulkhead had been removed and I noticed no evidence of any support at all. I just didn't see it. Because it's not there.
So for now, we're using some plywood pieces to support the cockpit.