I’m running beginner tournaments at Dante’s every Thursday evening.
From 7-9:30PM we run multiple rounds of random teams which allows players to enter any time, and leave any time.  It costs $2 to enter, the highest average score gets 50%, and the highest new player gets 25%.  The remaining 25% is used to feed the elimination round.
At 10PM we start a single elimination round by pairing the highest and lowest scores into teams.  Each player pays in an extra $3, and is expected to stick around until they are eliminated or win.
Last couple of weeks we’ve had 8 – 10 players participate, about half of them from the Saloon, and half brand new players.  I will keep posting here progress and changes to the format.