There would be no issue adding CF fin-to-fin other than weight, fin thickness, and a little bit of added drag. At the end of the day, it would not add much weight, but my challenge with a project like this is trying to be as minimal as possible (but still stay in bounds of sound reasoning and safety). More build photos to come...Would there be any issues besides heat doing a tip to tip CF on this?
We should set up a guesstimate contest. Participants don't get any other details then are available from following the thread. They need to guess at what altitude rapid disassembly takes place (if at all). Closest guesses are put in a hat, one winner drawn, and the winner gets an L1000.
The challenge will be in determining when the fins peel the casing apart, and how far up it'll travel upward yet before disassembly
Of course, you'll need to get the altimeter back to confirm.