Hi Matt

I had a crack appear in my build about 100mm long, I closed the hull immediatley and repaired it. Firstly the crack was open a little, so I brushed a little epoxy into it and got the hair dryer and warmed it a bit so it would thin and soak into the crack, then put a 25mm wide piece of f/glass the length of the crack and flattened the join as best I could to its original shape (flat ply) and tried again a few days later.

Are you steaming the ply? I'm not sure, but when I build again, as I got to about half way with the bending, I would again hit it with the boiling water and towels to help it along a bit more.

Regards