From the posts above I could either let it ride, or throw 50 fingerlings in and not have a worry in the world.
With mature LMB in your lake, fingerling channel cats have a much lessened chance of survival, so it's really tough to know how many fingerlings would be needed to get survival. But if you've got various types of cover and plant growth, some may make it.
Regarding bullheads, my experience has been that LMB will eat them until they get to about 14", and then those bullies are a bit too big for the majority of LMB, so you end up some larger adult bullheads, and very few if any juveniles. In my main 4.5 acre pond, we remove all bullheads caught.
