We went there for grovefest and stayed at a friends house there for the rest of the weekend. You could sink your boat there from the huge waves on that lake, never found a good spot to board. yuk
I'm not Mandi but yes, the SPF is held at Lake Eufaula at Eufaula cove. Come on down, looks like its going to be great http://www.southernplainsfestival.com
In the big parts it does get choppy on windy days and high boat traffic. Try to stay in the coves and it is usually pretty good riding. Eufaula Cove is smooth most of the time. Neal