The best way to troll a streamer is when there is a chop on the water, this creates action. Also I hold my rod and work it a lot. I'll pull it up forward and then let it drift back, repeat. What this does is when it drifts the feathers open up and when you pull forward the feathers collaps back down. This creates a lot of action and strikes. Hope it helps. Try and match the patern of the fly to whatever the bait fish is in your lake. Usually the shop owner can help with that.