Like many others, I dislike the double elimination tournament format. If I'm put out early, that's not much fun, but if I put some wins together, the snail's pace between matches can be crappy too. I understand that single elimination would probably have poor participation because players would hate to be put out after a single loss.
So maybe a better format would be some form of round robin, but how exactly would it work say for less than 16 players or maybe a number nearer to 30?
If you have round robin with groups of four and two advance there is less chance for collusion or players who just walk away. There is still a problem of deciding ties.
Another format is to run many small single-elimination "qualifiers" and the winners of those meet in the single-elimination main tournament. The losers in the qualifiers can re-enter another qualifier for another entry fee. Some tournaments using this format around here ran the qualifiers long enough that a player could enter five times.
Here's an example plan for a two day tournament:
The qualifiers run all day Saturday. There are 8 players per qualifier. The doors open at 10AM and play starts as soon as you have 16 players signed up. You draw the 16 into two groups of 8. Those groups will play straight through -- there is almost no waiting once a group starts. Continue to form groups as new players show up. After an hour or so, the losers will start signing up again along with the new arrivals.
In the groups of 8, the winner goes on the main board and returns on Sunday with guaranteed money. He can go home or match up or sweat matches. The runner-up gets a free re-entry (or you could give him his entry fee back). The winners go on the main board in seeding order so that the first player qualified is the most likely to get a bye. That encourages players to show up early.
If you lose in a qualifier you can re-enter when you feel like it. If a friend just signed up, you could delay your entry. Or maybe you want to have lunch across town or get your cue fixed or sweat the match between two champions that is about to start. Re-enter if and when you please. Similarly, you can enter when you want on Saturday. If the champions won't show up until 3PM, enter early. If you have to work until 4, enter at 5.
Entries on Saturday close when you can't get at least 4 players to make up a group or it's time for the staff to go home or the room to close. Maybe you want to set a limit of 8 (or 16, 24, or 32) qualifiers.
On Sunday you start practice at 1PM and play starts at 2PM sharp. The losers in the first round get back a multiple of the entry fee. Here is a possible prize breakdown for 16 qualifiers (128 entries) with no added money and a $20 entry:
$80 -- 9-16
$120 -- 5-8
$200 -- 3-4
$300 -- 2
$420 -- 1
There are only 4 rounds on Sunday.
Some other details:
You keep the entry small to encourage a lot of people to re-enter. Also, it lets the really dead money have a chance to play. It should be about half of what you would charge for a double elimination if you want the same size pot since players will typically enter twice.
You can also do groups of 4 if you want a one-day tournament. Start qualifiers at 10AM, main tournament at 7PM.
You can vary the race -- to 5 in the qualifiers and to 7 in the main.
From the room's perspective one advantage is that it keeps a lot of people around on Saturday as players re-enter. Also, later on Saturday entries will naturally taper off so you will need just a few tables for those desperate to qualify, and the room can rent the other tables.
There are ways to do the draws in the middle of the qualifiers so that players will never be sure of who will be in their group.
You could run a few qualifiers the day before or even the previous week for locals.
You will typically get 128 entries from 50 or 60 actual players present.