I was fishing a small reservoir in Southern Idaho with Triploid Kamploops Fish was good and hard. Picked up a few with indicator and midges and a few more with a green apple colored leech. The caddis were hatching, the midges were hatching and the callibaetis were hatching. But the usual adults and emergers weren't working. As i pulled my boat up on shore near dark, I could see fish, large and small, working the open areas of the weed beds within 20 feet of the shoreline and in 4-6 feet of water. The little fish would fly completely out of the water and you could tell their size easily. For every 6 small fish a large 20+ inch would disturb the surface or would regularly and rhythmically "porpoise" the surface.
How would you approach the rising fish in the next 30 minutes of daylight? Floating line? Types of flies and presentations. The water was nearly still with an occasional chop from the wind.