I'm voting NO with John Cochrane BB at this time for mandated stealth mode at contests. True... I've never flown a mandated stealth only contest. But, I've flown enough FLARM contests to see it's value. Here's my thinking behind it:

1) Given that one only hears collision advisories with 15-20 secs from impact... I seriously wonder if a little more situational awareness would further mitigate mid air collisions. There really haven't been any studies or tests that show stealth mode as NOT DEGRADING its collision advisory effectiveness.

2) FLARM the manufacturer doesn't recommend stealth mode.

3) The advantage FLARM gives allowing leeching on other pilots is probably over rated. Sure... it helps in some situations. But, I don't think it overwhelmingly distorts a competition. The very best competitors always seems to prevail no matter what.

4) Let's not make things harder for contest management... and simplify it for competitors.

5) Does stealth mode filter out ADS-B warnings also? Docs from FLARM do not make that clear. I certainly do NOT want to filter out power traffic advisories.

Walt Rogers WX