On Wednesday, January 14, 2015 at 9:33:11 AM UTC-7, Mike the Strike wrote:
Firstly, it's impossible to keep glider pilots away from or out of clouds even in contests.

Mother Nature does a pretty good job of this given prevailing pilot skills. If they enter cloud, they'll spiral dive out the bottom in a few seconds - and they won't be anywhere near the top of the score sheet. Absent instrument training, currency and competency, gyro gizmos won't help.

From the scoring standpoint, the only guy one has to worry about is a highly competent instrument pilot who has jumped through all the hoops to get glider instrument trained - the CD will probably know who these are and keep a close watch.