Last year I got into this mess with the O'Day 30 that I have.
Sears sells a box end ratchet wrench with a pivot that eliminates the need to cut any fiberglass. The wrench is 7/16" with the SKU 14994 42473 I think...still have sticker on wrench but it is dirty. It is still a bit tricky but I removed three stantions and sealed with 3M 4200.
I learned the hard way with the jib traveler. Mine was leaking bad. I removed, used an old allen wrench in a drill to remove as much of the old balsa at each hole as I could. I filled each hole with epoxy resin. This is where I screwed up and thought cardboard and tape would keep the dripping from the cabin. What a mistake. I also did not realize that each screw was different in length until I was reinstalling. I have no more leaks but I am touching up the inside liner from the mess that I made with the epoxy.