That's a just one reason I am not a fan of 2 prong rests....and I have others, but I digress.

A full containment rest is good because there is no chance of the arrow falling off. WB's are pretty hard on vanes, but a more rigid vane such as the blazers work very well. I've not heard of any problems w/ the WB in freezing temps, and I just can't think of a good reason why it wouldn't...

The Drop Zone is a fantastic fall away rest. The arrow merely rests on your shelf, which is of course covered w/ moleskin, and picks the arrow up as you draw. Not much chance of it falling off that one either. Wet, freezing weather MAY be an issue, if the spring freezes up.....But I can't imagine it would be frozen enough that it wouldn't "break loose" when you draw.

If I'm buying it, I'm getting the Drop Zone, but that's just me.