It depends on the lake they're being stocked in...as in how much Oxygen, water temperature, etc. Most of the lakes here in southern Ohio that get stocked with trout can't support them...so within a few weeks most die. However, there is one lake that they survive in, and we have caught 3 and 4 pounders there...so they are living just fine. Think it's the added Oxygen levels there, due to it being fed by several creeks and springs. It's hard to tell what will work best on your lake, but on ours we have good luck trolling Roostertail spinners and Jo-flies. When lures don't produce...we float Powerbait a few feet off the bottom...above a grass bed. Stockies get a bad rap from a lot of guys, but if that was all they had to fish for, maybe they would enjoy them as much as I do.