After cutting the floor out or at least most of it I am liking what I see. Most of the stringers are solid (I know you have heard that story already). I did drill holes high,middle and low in the stringers from aft to the cuddy cabin door. Here is what I have found and my questions.
This is in the bilge, motor mount for the twin engines and a bulk head. This is straight forward, both are rotted and will be cut out.
This is the fuel bay to the right and the port main stringer. Ignore the last piece of decking it is being stubborn. The first 18 inches from the bulk head forward are a little wet and then from there all the way to the bow the wood is solid and dry. The fiberglass is tight against the wood and I see no issues. I was thinking of cutting that first 24 inches out and replacing it with fresh 3/4 exterior ply. Does that sound ok and how would I do it.
This is the transom port side along with the port bilge stringer. It is also dry and solid except the first few inches which are a little wet probably from the drain hole that was drilled right at the transom and the base of the stringer. It appears where these type of drain areas were created they did not seal the wood inside the cut area. I was thinking of again just cutting it out from the transom forward about a foot or at least well into dry solid wood. Same question as above.
The transom there is no question on it is mushy in several spot down low and one spot high on the port corner.