My ideal troll speed is 1.6-1.8. I catch all the way up tp 3mph when I troll steelies but the water is warm and fish are very active. The problem with cranks is they won't get in the target zone at slow speeds. They need weight. I used leadcore and copper lines Friday and caught them on both. The only time I tried 20 ft water was a few weeks ago and we caught 16 and kept 14. The bigger fish certainly seem to be in the deeper water right now. Did you see the post that caught 60? That was deep water. I would say to use both and see what works. Thursday was worms, but we caught a few on cranks and spoons too. Friday was all cranks and spoons. The mayflies are getting started and spoons and cranks should be better. I will know a little more by Wednesday.