I would say about 5% of the time for me. I find myself getting out of spins about once a week or so (during power on stalls in a 152 usualy), unusual attitudes (I get to practice lazy 8s), and I save a lot of landings. When a student puts on or takes off the hood, I get ten seconds or so then, also. New students, you get to show them things before they do them. Especially commercial students. I show them Lazy 8s and chandelles a few times.