Originally Posted by rshelby
Thermals come in every form you can imagine and even more forms you haven't imagined yet. Keep it simple. Do whatever it takes to stay in the lift and if you are not in lift go somewhere else.
+1. I would only add that if you do sense any appreciable rotation (which would be incredibly difficult from the ground), circle against the rotation. Here's a link I had bookmarked that has some interesting discussion:
ps: Just stumbled across this one which really has some good info in it: