Arkansas has shot size and shell limit restrictions on many of the WMA's. Some also have HP restrictions, but on Black River, that's just not a possibility and could be a liability for G&F. Same with the hulls - in some of the WMA's, you could run a 12-foot boat, but there are some that on high water, an 18-foot boat would not be out of the question.
In the flooded timber, first come first served is a great idea, but as a practical matter it's almost unenforceable. It would be a lot of "he said/he said" type bs, and which group do you believe? The guy by himself who was there first, or the six guys who all claim he came in on them a half hour before shooting light and set up 50 yards away? Somewhat the same with the 300 yard rule; some days, you could set up 100 yards away and it doesn't matter, particularly if the groups honor each other on the ducks working.
Number in a hunting party is another sticky thing - 7 guys in one timber hole versus now 3 groups that all have to be 300 yards apart...it makes the crowding even worse.
Arkansas has 85-90,000 hunters where they used to have 35,000. And everyone wants to be on the X as the hunting quality here continues to get worse. Unfortunately, you can't legislate courtesy, morality, and plain old common sense. And you have about two generations or so that expect every hunt to be like the videos they see; when it's only about the pile and the "likes", you get bad behavior like limits of uncleaned mallards being thrown in a ditch, people asking other people to "borrow" ducks for a tailgate shot to make a bigger pile, and a continuous stream of "me first", expressed however.