I think this will work great for finding fish. And yes you will get all sorts of species. Heck I have caught 20lbs cats out on Saginaw bay trolling crawler harnesses.

Just a little different way to do things. I learned crappie fishing with a minnow and bobber from my grandpa. I know I'll never get him to try this way of fishing and that's fine I'm always looking for new ways to go after fish.