If you are fishing 28 to 30 feet down, you are fishing too deep right now. We have been catching our fish in the top 3rd of the water column. This time of year if weather is good the fish like to feed up high. Try raising your baits and see what happens. If you are trolling you also need to make sure you are at the proper speed. use bags to slow you down if you are moving too fast. 1.8 to 2.0 for harnesses and up to 2.0 to 2.5 for spoons would be a good start.

Keep it at, you'll get there!