John:
This is my first post on the Breeze, been lurking on the SUP forums for years....

Basically everything Greg has said is bang-on. Inland (from the Great Lakes)winds are fickle all summer long, and really only can be counted on from Sept onwards. I've windsurfed for years on and off in the Huntsville area - and yes, Hutcheson Beach is the place when there's on-shore.
Good luck in July. Also the beach is super crowded, and not really suitable for rigging/launching at that time. Come September, it's game-on for kiters and windsurfers.
Best to take advantage of all the other water sports really. There's a big wakeboard scene in this area. Give it a try.
Cheers
David S.