I regularly flew my Aerostar 40 (hi-wing flat-bottom trainer) with an OS 40FP (NOT a powerhouse) in 20 mph winds. Makes for sporty TOLS.

I had it up once, practicing Figure-8s, when my instructor said, "Here, let me land it." I gave him the tx and turned around. Approaching from behind was a thunderstorm with a massive wall cloud leading it. The gust front was from behind us, so the instructor landed it coming at us in the tall weeds bordering the strip. Barely had time to take the wing off and get in the car before huge raindrops pelted everything.