On Thursday, January 12, 2017 at 3:45:02 PM UTC-8, wrote:
FLARM is most definitely *not* useless in big crowded gaggles. You do need competition mode enabled, and a proper display (I recommend a FlarmView).
Has saved me many times already this competition from gliders turning inside me just as I was about to tighten up.

In Matthew Scutter's video of a crowded Benalla pre-start gaggle, the FLARM behaves as it should.
Can only find the video on FB. Sorry.
https://www.facebook.com/SoaringSocietyofAmerica/
Jim