I have to admit that I dont have benchmarks per-se when deploying flaps in a tight turning situation. Like climbing a steep hill in a truck, I can tell from the sound of the engine, when the bottom speed of a gear is approaching. Similarly in the 38 I can tell from the engine sound, max-g, and nose weight when Im approaching the bottom speed of a flap setting. To carry that anology a little further, I do "upshift", and "downshift" my flaps alot when crossing through different speed windows. The biggest que to me is the difficulty or ease it takes to maintain 'tunnel vision' Gs.
Getting "stuck in the air" is a result of stalling out of the verticle on your belly with full flaps instead of "going over the top". In AH2 the 38 is a little more nose down biased in that situation than it was in AH1, and slightly more attention needs to to paid to breaching true verticle to aviod belly flopping. If you do start to flop push the stick ahead, and retract flap immediately to avoid the flat freefall. You should look for an enterance speed of at least 120 to safely make it over the top.