I’ve never bought into the whole only hens in the spread thing early season. Sounds good, but does it really make a difference? I’m skeptical.
Spread definitely depends on the situation. If it’s a small spot in the woods and I know I’m just gonna shoot woodducks, I’ll just put out a dozen or less woodducks. Medium sized spot with just a couple guys, I use a dozen woodies, spread out in groups of 2-3, and a group of 5-7 mallards.
If it’s a larger pot hole, I might up it to 12-15 mallards in a few distinct groups.
I stay away from large open marsh in early season.
Gaddies, Widgeon, and Pintails get thrown in the spread after the first week.
Geese only if I know geese use the area.
I always group/separate species to a point. Woodies and Mallards usually don’t hang to close….I’ll usually keep the woodies in TIGHT to shore, and Mallards out. Even late season, it perturbs me when my buddies mix species randomly (get those dang gum divers away from my black ducks).