I haven't ran a tournament before but ive played in a few. If you have six games, I would prefer a set amount of overall plays. Lets say 12 which would allow me to play each game twice or if I scored good on one game first try I can play a game three times etc..
Another idea is to also have one game dedicated for a side tournament @ $1 a game and when superbowl was over, i.e. 4th quarter timer is 0, winner takes all or top 3 split pot etc..