I also have had to deal with the party people over the years who could not get up early enough to fish.Walleye prefer to feed in low light.So the first couple hour after sunrise and before sunset are good times to catch.Another factor that helps is the lack of boat traffic at first light.During the summer on calm cloudless days the fish will move deep and be in a negative mood to bite in the middle of the day.Tough to catch your limit in those conditions.