The knee for the rear stay was glassed to the deck before mounting the hull to the deck. There was no clearance to cut the old one out, grind it down and glass a new one in...
This was my solution....
I cut the knee out, cutting beyond the factory tabbing so I would have room to bond the new knee in. I used the old section of knee as a pattern, glassed it in place.
To reinstall, I have laid up a 5×18 section of glass on foil so I can remove it. I will cut it into strips, bond those to the inside to make a lip to mount the section I cut out to. Then I will feather out the repair and glass the perimeter back together where I cut it out.
Pics probably tell the story better than I do.
If you have any recommendations on how to do this better, please say so.
I also managed to cut out a section of the old transom ply. The bottom few inches are soft, including where the lower rudder mount is. I cut a peice out, made new one, bedded it in with milled glass and resin.