When Bob Clouser and Lefty Kreh introduced the Clouser Deep Minnow it was widely used for smallmouth and salt water applications.
Bob also developed the Foxee Minnow for trout, it is not widely known and not on his shop web site.
Substitute artic fox tail for the deer hair,,,, smaller hooks are used and the fly has nice fluid movement when drifting/swimming.
A variation some tiers recommend is using red fox body hair to immitate small crayfish when molted, these also work well.
Colors I like are olive over white,,, other variations include yellow/brown over white and chartreuse over white.
Observe your baitfish dominant colors and make the wing sparce.
Sizes down to 10 work well at times.
Try casting near shore in shallows where baitfish live.