Slow day on Rock until 2 pm. Then from 2-2:30 hooked up 6 trout:: 5 browns and 1 rainbow (which I really believe was a Kokonee----are there Kokonee in Rock?). 2 colors of leaded line with a small Needlefish perch pattern---- orange/green/gold,----just knocked them dead for 30 minutes. Lots of other bites throughout the day, but hook-ups were few until that 30 minute window. Is that typical for Rock? I'm a newby to the lake and still trying to figure it out. By the way, the rainbow/kokonee and one of the browns were very nice: 18+ inches and fat. 4 of the browns were skinny, about 12-13 inches long. Beautiful setting for a lake, though and aptley named.