I set out to repair 3 leaky wing tubes only to find the fiberglass in surprisingly good shape. I thought that the fiberglass would be cracked/weakened if the leaking was due to freezing. It seems perfectly intact and strong to me. Upon closer inspection I can see that there were air pockets between the gelcoat and the fiberglass and I can easily flake out the bad gelcoat (see photos).
So, Should I go through the trouble to prep and fiberglass the tube? Or should I just clean out the bad gelcoat and re-coat the inside of the tube.
Also, even if I do re-glass the wing tubes, will I still have to re-gelcoat it? Has anyone else had these cracks/airpockets in their tubes before? What's the best way to re-gelcoat the inside of a tube?
There is my pickle- all opinions are appreciated.
Thanks.
Edit: FYI the hulls are from 1987. And sorry for the huge images.