I'd drilled the balsa picavet so the A+ Pi case actually screws onto it now, rather than being held in place by elastic bands or cable ties.
I'm glad I did, as this flight certainly tested the robustness of the whole assembly, as can be seen by the altitude readings recorded by the Pi.
Fortunately, I always attach the picavet a few metres below the kite so that (in theory) it will touch down while the kite is still aloft and providing some lift as opposed to crashing directly into the ground. This worked well today and the Pi was also lucky that it ended up in a soft patch of tall nettles. My legs were not so lucky - 8 hours later and they're are still tingling from the stings. I knew I shouldn't have worn shorts....
Here is the touchdown site from the Pi's perspective:
Nevertheless, despite the short duration of the flight, I still managed to capture a few good images, enough to add some tiles to a map of Bedfont Lakes Country Park:
The Pi seems no worse for wear and is still working fine, so I suppose you could say this was a successful test flight.Nevertheless, I think a sturdier, surrounding case should be a priority!