Wanna really make it interesting?...
Put all the lakes in a hat. Chose the dates. The Friday afternoon before the tournament, around 3:00, draw from the hat and name the lake... Do this each month until down to last two lakes. Then you have last drawing choosing last regular tournament and the remaining lake is championship lake....
Everyone would have a equal chance on each lake as there would be no prefishing and no hireing guides.
Except for championship which everyone would know that lake ahead of time...