I was Googling around, and ran across yet another AOA device. Check
out this site:
http://www.adventureairsports.com/aoa.htm
and pay particular attention to the 3rd photograph. Yaw string and AOA
in one, and not very expensive!

-John

On Dec 9, 6:46 pm, "Bill Daniels" bildan@comcast-dot-net wrote:
I think it's likely that the SafeFlight vane-type AOA indicator works fine
as long as you are fairly good at keeping the yaw string centered.
SafeFlight has been around selling these things to airplane owners for a
long time. It's nice to see them offering a product for gliders.