We usually fish them in 30 or under. If you can find structure like beaver damns, rock shelfs, valleys these can be a big help (of course that either requires a fish finder/camera, lake knowledge or some visual). I use little jigs (walleye flyers or teardrops) tipped with trout bait, egg sack, worm or minnow 2' or under from the bottom. A search lure also works for bows, just tie on a swedish pimple or similar -silver- then run a 24" snell to your small hook and bait. Basically jig it up and down to draw attention of the trout, they usually pick it up on the fall. Another way that has worked very well for trout here through the ice is floating power bait. What you do is put just enough split shot to sink it to the bottom! Thread a plastic straw on the line, place small piece of split shot on the opposite sides of the straw, tie on a very small trebble hook and bait it completely with the floating trout bait. You can make the snell however far you want the bait to rise off the bottom(ie 12" etc from the last split shot). The purpose of the straw is to hold the floating bait away and out from the line and it will not tangle this way when fishing through a hole. I then spring open my bail or set the drag at a very low setting, you can either watch the tip or use those small bells to indicate a strike(slip bobbers will work as well). When I fish hits it I will him take it for awhile and then set the hook slowly put with constant pressure, unlike lakers these trout have very fragile mouths and if you try to cross their eyeballs with a hook set you'll swipe her clean out. The ideal take is let the trout take it deep into the gullet then they don't get away!(Only bad part is you are eating that fish as he will not survive if released). I keep my drag very low when ice fishing in general, but especially with trout again b/c of there mouth structure(most can pull line with little effort). This little combo accounted for 16 bows last weekend ranging from 2-8lbs(our lake bows are bigger than most up here).

Best of luck and hopefully you connect.