When fishing with a crystal minnow, make a cast to actively feeding fish, fry pods, points, sandbars or other forms of cover and structure. Point your rod tip towards the water and use your wrists in a downward snapping motion to work the bait. Use the reel to retrieve slack line, but use your wrists and rod to provide action to the bait. Do not simply wind the reel handle to retrieve the lure. Allow the crystal minnow to dart and dance from two-to-five feet below the surface one that works especially well when using a chrome colored lure during times of bright skies yielding maximum reflection.

Hope this helps. with regards to what type of fish you can catch mainly ideal for Bass but they are good for all predator type fish. If you use them off the boat trolling even Tuna is caught on them. Which type do you have ? Is it the floating one or the deep diver one.