I guess that can vary depending if you have a flasher on other lines or running dummy Flashers. If I run a dummy flasher, I'll run the spoon 7-10 feet behind the dummy. No dummy, maybe 10-25 feet back from the ball. If other lines have Flashers off the riggers I might run the spoon without a flasher the same distance or 5 feet further back than the line with a flasher. The idea being that the other line with a flasher is below to attract, and have the single spoon trailing to pick off fish that see the flash on the other line. As I said everyone does things differently. You will get a lot of different answers