Well, I finally did it. After 76 flights as a BAR, I broke a fin. It's on my Magnum, and is right above the fillets. It is 3/16" plywood, and I had put a layer of 5 oz glass over it also. Can anyone give me any tips & pointers as to how to repair a broken fin? Unfortunately, I did a REALLY good job of internal fillets on this baby. Also, one side of the remaining piece of fin is fiberglassed / epoxied to one of the outboard 29mm motor mounts (inside the fincan, of course).
The flight was a K550 to 4300', and the apogee charge fired but the main charge did not (for reasons unknown). It landed flat on its side.