My guide for my Dall sheep in Alaska used a Swarovski 20-60x65 angled. To save weight he didn't use a tripod but perched on a rock or laid on the ground. The angled eyepiece worked good. It was clear most days but I can't say what power he used. He was counting rings on one ram that eventually wandered to 150 yards of us. Took a couple hours and was only able to get 7 rings on him. Had to pass as the minimum is 8.
