When I get up in the morning, I decide where I am going and put the flies for the day in those little round containers if they are dries, or some kind of foam box for nymphs, but I wind up at the end of the year with about 15 little boxes and my big boxes empty - do you just take your big boxes out to the stream, or strip a few out each trip? At the end of the summer, I empty all the little boxes back into the big boxes.