Focus on the big rivalries (teams with a big fanbase and big tailgating gameday experience). ESPN, BTN, ACCN, SEC etc regularly tour around fans tailgating doing unique things in pre-game so it'll be a good chance to get your product on TV (free marketing!) - perhaps something they'd use for commercial in/out breaks..
Teams with big TV ratings and rivalries - Alabama vs Auburn, USC vs Notre Dame, Oklahoma vs Texas etc.
I'm in B1G (Big Ten) country so of course Ohio State/Michigan, Purdue/Indiana, Wisconsin/Minnesota, Michigan/Notre Dame would be my early targets.