My friends Erin & Marianne (both seasoned jumpers) spent a 1/2 hour at SkyVenture Colorado to practice maneuvers that will help them in future jumps.

They did six 2-minute sessions of drills: belly flying, back flying, walking, and sit flying. I didn't catch it all because I had an earlier flight out of Denver :(

I was hoping to join them, but neglected to book time in advance.