I like Tallahatchie refuge in Tallahatchie County, out from Grenada on Hwy 8. Do a google search and they have a website. You can mail them a check, but they do require a special permit over and above your license. Warning, do not drive onto the propterty if you have a four wheeler on a trailer or in your truck. You can park and walk less than 100 yards anywhere there are birds on the place.
they have information on all their WMA's across the state. Malmaison has always been the honey hole of public spots, but take a piece of advice, not a place to go into unaware of what you are getting into. You not only can get lost, but it is chocked full of stump holes if you are wading, and cypress knees that will capsize a boat. You have to know your stuff in there. Tallahatchie is right down the road from Malmaison.
As to other state WMA's. I like O'keefe over in Lambert. Good parking, easy four wheeler ride in. Hunt flooded millett or rice fields. Do have a green tree area. My advice is to scout it one day and hunt it the next.