Before PowerFlarm I had a couple twin
turboprop airliners sneak up on me at
4000' (well below any proposed
transponder mandatory altitude). I saw
another get cosy with a glider and
towplane at about 1000' AGL.

With PowerFLARM I see ADS-B (airline kit
already) from ten miles or so away - lots
of time to get out of their way if
necessary.

If I fall out of a wave or thermal, I'll find
another one or meet another farmer.