I have found a good sealant/adhesive for damaged flexible panels
While folded in a boatyard, someone from the yard stepped on a turning block which was supposed to be out of the way, but wasn't.
(I was not there at the time)
Sure enough, it was on top of one of my Aurinco panels
and it made a 1/2" cut into the surface over a cell.
As soon as I found out about it nearly a week later, I cleaned it with a damp sponge, dried it with a hairdryer and added a bit of polyester.
That only lasted a week, and it had already turned yellow.
Next, I tried clear Shoo Goo.
It's still there, doing its job 3 years later and the panel is working 100%.
BTW, Shoo Goo is exactly the same stuff as E6000 which costs more. Go figger.