Paul,
I have hunted Beaver Dam Lake. Mike Boyd is who you need to call to set up a hunt. He and his son Lamar own the hunting operation there. You motor from his backyard to the blind. His number is 662-363-6288. If you hunt with Mike you will have to take care of your own lodging and meals, unless he has built a lodge since I was there.
I have another friend who owns a hunting operation across the river near Marianna, AR. It is called the L 'Anguille River Duck Club. They have lots of blinds/locations on their own land. It's a father/son operation also. My close friend stays at the lodge and guides/calls for them all season each year. The contact person there is Justin Higgins and his number is 870-897-2799. If you hunt with them they will provide you with housing at their lodge, and great home cooked meals each day, cooked in the lodge kitchen.
Here is their website address:
https://www.duckhuntsarkansas.com
Best to you, SRH