The water that is coming out of this patch and being collected is fairly clear, but there is some dark nasty stuff staining the breather material. I am working under the notion that black balsa is too far gone, is that the case? Or is there a better way to decide without exposing a bunch of it?
Right now I am inclined to continue cooking this patch for a while. But when I do pull this plastic off I may remove a small section of the skin, maybe a 4" x 4" piece to get a better idea of what is there. Or maybe drilling some 1/2" holes to see what comes out. I can imagine that it is possible to dry rotten balsa out if you work at it long enough.
The patch that I am working now is on the port side about the middle of the keel and almost under the water tank, so not quite in the false bilge area.
Thanks for the help and the inspiration:-)