Gambler is correct about placement. Lakers are notorious followers so you don’t want to pull them away from other opportunities with trailing baits. This uses an assumption that fish see up better than down based on eye position. I did an article in GLA a few years back titled “layered for lakers” that chronicles a technique I was using on Ontario. First rod forward was the deepest with a 2 lb thumper and cowbells. Next rod was a dodger/fly on rigger, just off the bottom with a long set back to stay out of the thumper. To figure out how long a setback you use via A2 + B2 = C2 ( I know ....sorry it’s math) whereby A2= depth of water and C2 = amount of line out on thumper. B2 is what you need to solve for rigger setback. Next bait forward is just above that with mag dipsy on one side and then just behind that rig is standard dipsy on opposite side. You can add more layers with junk lines out back or boards. I can run additional thumpers off my otter boats with fixed aftco roller releases. The idea is to present as many opportunities for a fish to have a bait in its face while trailing behind your spread. Of course you could just jig for them LOL.