I can tell you that it was stocked with rainbow trout two weeks ago. Sorry, that's all I got. I've never been there but I watch the stocking reports and I got fooled into thinking that Monument Reservoir near Monument was stocked!
I normally use a pistol pete at the north Monument lake. I've seen plenty of fished landed with powerbait there as well. We also caught quite a few using worms last summer. Not flies, but they still catch fish.