I've got lots of snappers - just no alligator snapping turtles.
Catmandoo - agreed about size and survival - I was going to raise them to be 4" prior to releasing them. According to the turtle farm, they grow fairly fast.
Bluegillkiller - that is the question, will they stick around? My ponds are both old kaolin pits with very deep, steep sides around 95% of the water. I could easily fence off the rest to block egress routes but not sure I want to do that.