many many variables here but here basics.
I like to set up just off the deep weed edge where I mark suspended fish. set light down 2ft. some nights you draw minnows rite away other nights never do draw many. don't have an answer for that but its fact. don't give up too soon. some nights its a bite at dawn. a lot of times though they don't turn on hard till 10-12. some lakes have a great bite an hour before dawn and up to 8-10am. minnows and jig n plastics(bobby garland baby shad or puddle jumpers) work good. also jigging raps(ice fishing lure) work great. green glow jig heads are a favorite of mine. put light cord on a float so its not jerking around with the yak. some nights you can fish in the light some nights its better out at the edge. don't give up on the light its not bs!!!!!!! its also not magic. it wont work every night and it wont work where there aren't any fish. do your part to get on the fish and the light will more than double your catch 75% of the month.
good luck your in for some memorable nights!