Troy,

Two of the clubs in our area are on full scale runways. We must have a designated spotter looking for incoming planes and have a radio scanner listening for air traffic. You can't hear a plane coming in down wind until it is right on top of you. We have had some close calls so the rule is a steadfast rule. Violate it and your gone.

Usually its the jet boys that like to power climb above 400 ft. For sport plans it doesn't usually happen. Gliders have a tendency to fly rather high too giving you more time to find thermals.

Ace