Gun Dog, I've hunted 20 many times (that's where I grew-up). Like DS said, it's on the Front Range, which is close access and, for that reason, lots of people (the main reason why you can only get tags for 20 through the draw).
I've hunted "late" season there 3 or 4 times. There is less people/pressure then (because there's only 100 bull tags for it then), that does make it the best time to hunt that area.
As KC pointed out, the reason for 'late' season is to get a harvest on the "park" herd. By having season so late, the plan is that the deep snow will have caused the park herd to migrate to lower elevations (so it's dependent upon the snow --like most elk hunting-- and in Jan of last year, there wasn't much).
Even though the pressure is lighter, there's still lots of competition for the tags (with only 100 bull tags, a person needs at least 3 preference points to even have a chance at getting a tag). I'm sure you've noticed that there are 3 late seasons this year, 1 in Nov, 1 in Dec, and 1 in Jan; however, although they added a season, they shortened the other 2.
The Jan season seems to be the most popular (it gets the most applications). Due to scheduling constraints, I plan on hunting the Nov season this year. I put in for a cow tag this year, so my odds are pretty good (300 per season).
I don't know anything about "wall tenting," DS is the man-in-the-know there. Are you a resident or a non-resident, how far are you having to travel?
If I can give you any other help/advice, shoot me an e-mail or IM.
Best of luck on your hunt
<FONT COLOR="#800080" SIZE="1">[ 03-11-2003 21:48: Message edited by: RANDALL K ]</font>