Fish the North American Lake

I use to fish lakes often in spring and autumn, because the conditions are better for dry fly and nymphs like chironomids, but this year is wary strange, no many activity on the surface so we have to figure out where the fish are and the depth.
That’s why in this case I’d like to begin whit a bit of trolling whit streamer or lure, than when I caught a fish I stop the boat and I try.
Watch the video and have a big one.