We flew them at the Test pilot School in the spin program. They were tough, had some very interresting spin characteristics, and so long as you made sure the tip tanks were dry before entry, they recovered nicely. We tried using the Tweet when the end of their life approached but they just couldn't climb back to the entry point fast enough to get enough spins in one sortie. Ended up leasing T-2 buckeyes from the Naval (eeck) TPS.
Loved that bird. Most fun ride I ever had was my A-37 spin ride. Need to find a way to convert my tracking video to an AVI file.
<b>"It's time to get medieval, I'm goin' in for guns"</b> - <i>Dos Gringos</i>
Never flew a tweet, but spinning a Citabria is about the most fun I've ever had in an airplane. You're sitting right on the CG and one arm wants to go this way and the other one wants to go that way, and meanwhile, that windshield full of ground just keeps coming and coming...
Gimme a chance to fly a Tweet and I'd take it in a heartbeat!