Since there have been a number of posts lately about this, I'm posting the structure and results from a recent 24 player NLHE home tourney (no rebuys).
Started 8:13 p.m. Start stack T5000+ (a few had more, as high as T5600)
20 minute rounds, barring occasional timekeeper reset error.
<font class="small">Code:</font><hr /><pre>1 - T50/100
2- T75/150
3 - T100/200
4- T150/300 20/24 players left
5- T150/300 25 ante
10:00- 10:10 break 13 players left
6- T200/400 50 ante
7- T300/600 50 ante 12 players
8- T400/800 50 ante
Mid round, we had the final table of 9 players form up shortly after 11 p.m. ~T13,600 avg stack, low 3250 high 22950
After drawing for seats, coloring up some chips and getting restarted with 11 minutes left in Round 8 (at 11:19 p.m.)
9- T500/1000 100 ante 8 players
Break- color up green chips
10- T600/1200 100 ante
11- T800/1600 200 ante 6 players
12- T1000/2000 300 ante 5 players ~T25k avg stack
13- T1500/3000 500 ante 4 down to heads-up
14- T2000/4000 1000 ante ~T63k avg,stack
</pre><hr />
The original goal of the structure was to end after around 4 1/2 hours. It ended almost an hour later, at 1:39 a.m.
We went from 3 to 2 tables during Round 5, in order to free up a bigger table for the cash game that was growing.