Aren't there some kinder, gentler bass that we could introduce? You know the kind that won't fight with the trout?
If not SMB what about stripers? They are a riot to catch and I don't think they eat trout. Or Rock bass, those buggers are pound for pound the fightenest bass around. and they get along with everyone. I think there were Rock Bass in Pigeon at one time but I think they were netted out.