Dave, i fish out of Bearcreek a lot and to tell you the truth we don't fish much out of there in June. The fishing is not very consistent. i did notice you said you could see them 'swim away' i wold say that is good you can see them that well. someone told me a few years back that fish (trout salmon) look up or can see up better than down. i would suggest try running your riggers a 2-5' higher if that seems to be the case. One other suggestion would be to keep it simple our standard spread is 2 riggers with fixed cheaters and two wire dipsey's. so if i wanted to fish without down temp i would focus on were the mark on the screen are lets say 40'. then one rigger at 55' cheater at 45', other rigger at 40' cheater at 30'. Wire and dipsey's on 2.5 setting ~3:1 maybe start one at 90' out and another at 130' out. some thing we have been doing more is swapping rigger depths rather than change out. if one at 55' and other at 40' just bring one up and one down. I think if most people watch there screens them they would see fish 'run' from there ball, we see is sometimes. the best way to judge speed is to stick a pole it water with spoon or flasher fly rig on it. you'll know when it looks right.