With their inline design they are the best choice while trolling with weights or divers. I buy green and blue reflective tape, cut strips about 1in. wide 4in. long and place a couple on each side of the flasher to break up the pattern. On the corners I place green and silver tape. Going over 100ft. deep using downriggers there are flashers with more action.

I figure at 20ft. intervals red then orange,yellow,green,blue, turn to black and scent and action become more important than flash.