Filser compass accessory

Filser has an electronic compass accessory that can be used with the
5000 (I assume with the 7000 now) to provide "instantaneous" wind
resolution from airspeed, heading, and gps. I would love to hear from
anyone using this, and an evaluation as to how well it works. For most
thermal flying the "standard" means of wind calculation is fine,
but in mountain / ridge / wave flying it seems it would be really nice
to get on the spot wind information. I use the Filser "straight
line" algorithm so thermal turns are not required for wind direction,
but it seems more like it is always catching up with the wind, and
changes in speed and heading upset it for a while until things settle
down. If the compass option increased this accuracy, and
responsiveness I would be interested in shelling out the big euro for
it...

Rick
304cz "RR"