ORIGINAL: AstroDad
I am thinking about installing one of these in a glider not because not to avoid crashing but to help keep it level when it is really up higher than I can see. When it is not much more than a spec it is hard to tell how level the wings are. If such a device will keep the wings level then I expect it could better thermal.
Gliders are so inherently stable you don't need one of these stabilizing devices. Once trimmed properly a glider will just hand there at the max. L/D and slowly decent. I've gone so far as to kick a little bit of rudder trim into my 2M gliders just to let them fly in the thermals on their own - more like a free flight plane. It your glider is getting too hard to see then thermal hop to keep it a bit lower.
Hogflyer