Live cigs will keep themselves upright so long as you're trolling slow. Dead ones are going to spin regardless unless you take a lot of time rigging your baits beforehand. They make weighted jigheads for trolling, I think you can get them at Academy if you want to fork out the money. Also, you can rig dead baits with a small egg sinker under the bottom jaw and wire through the eye sockets but that takes some time to get it right. I usually don't bother, a little spin action's not going to hurt anything so long as you have a swivel on the end of the leader. Plus the flashing as the bait turns can sometimes draw strikes.