MN DNR Lakefinder is a great resource for researching trips. I'd try to target lakers in Takucmich and Brookies in Trygg. Fat is also a good lake for lakers. Gun's last survey only caught one laker, a 23 year old 10 pounder. I'm no pro but I have been led to believe that you don't need to fish incredibly deep for trout until later on in the summer, just fish adjacent to deeper stuff. There are bathymetric maps on that DNR website as well.