How about doing the squares thing. 18 x 18 = 324 And if you don't sell out then issue multiple squares per purchase to fill it up. Do a selection video where Horton's cat can pick the 1/4, 1/2, 1...5 1/4, 5 1/2, 6 for each side. Whoever is top seed in the finals gets one side and the challenger gets the other with the final scores of each skier determining the winner. Should be easy to put together since the cat is doing most of the work. It will make it easier to participate if you don't know the skiers and should draw more players.