+xAgreed the SE2 with SD provides very little other than presentation of FLARM and ADS-B.
It maybe of interest that my TRX-1500 which is connected to my GARMIN 650 WILL provide warning of Mode C/S nearby, albeit with limited data. I do think there is merit in having this functionality even if the information is limited.
Drick,
I think you need to experiment with the positioning of your SE2. I would think you would get better reception if the unit was mounted forward of your instrument panel on your canopy. By mounting the SE2 behind you you may find it is is getting screened by aircraft occupants etc.
Take a look at these posts on the Flyer forum regarding SE2 and FLARM reception:
Tony