Always start out with one in the riggers, one on a diver and one on a copper. Let the fish tell you what they want you to run. If the flashers are quiet, change them up. I always leave atleast one flasher out. Most of the time I will leave it in the rigger spread. I'm a firm believer that a flasher will suck them into your spread. If they are not hitting it, they are still coming over for a look and then hitting the spoons in your set.