On Tuesday, June 11, 2013 6:56:35 PM UTC-7, mike wrote:

PowerFlarm works best if most gliders use it. Offering not to fly when more than a few glider are airborne or promising not to climb in the areas of good lift, while generous offers, strain credulity a bit.

I expect a fair amount of sincere rationalizing between now and broad Flarm adoption in the US. It's a free country, but I will continue to encourage as many of my soaring friends to voluntarily adopt Flarm as I can. 100% adoption at contests is the short-term goal.

9B