Helps, and thats my personal experience. You'll see post on this that say, I don't worry about the moon, just go fishin. I do that also, but I plan my vacations around the full moon periods.
This is my thinking: 3-4days before, 10-11am, then again from 9-10 pm. then it gradually moves up an hour or 2 from each days major feed. Nothing scientific about my findings, other than that is my experience. Its not 100% I've had bad days during full moons but the better ones far out weigh those.