HI Burnie,
I just got home from an antelope hunt in NW SD (almost on the SD-MT border). No luck. But here's what I learned about hunting water holes...be ready. When they decide to come in, they come in fast. They're jumpy when they water, and usually won't stick around too long. Like somebody posted, practice long and hope for a short.

I had a fawn try to nurse off a doe at <20yds, but I couldn't bring myself to do it.