I know three places with bulls over on the west slope, including some monsters. Jerry creek reservoirs have bluegills in the 1 - 4 pound range that will test any tackle and are an absolute blast on a fly rod. Harvey Gap Reservoir has some bulls too, but they average about 7" instead of over a pound. Elkhead Reservoir has bigger gills too, but it's being partially drained and won't be fishable for another few years. Other lakes with a few bulls over here include Highline Lake and Rio Blanco lake.