If you've not been to Knoebels, (and from the wording of your post I can't tell either way) it's existence and proximity to your location should be all the reason you need to go.
Heck, I drove there from IL this summer, even though I've been there before, because it's just that much fun. (And value priced, too! )
Hyperbole and Gullibility, a match made in heaven.
...and Aska has been top twenty, maybe top ten every year since it got enough voters to be counted at all.
I'm actually not sure why that SBNO coaster has remained but others have been removed. Probably to draw attention to it in hopes that another park would pick up a "top 10 woodie" for cheap. If I recall it's been SBNO since 2006.
I think it's a combination:
Does anybody know if Aska has been removed?
The removed SBNO coasters from last years poll seem to be ones that have finally been victims of the wrecking ball. Maybe he just did a little house cleaning?
Zingo is the only one I saw that isn't actually SBNO, but it is supposedly coming back, isn't it?
If you've never done this poll, but think you'd like to in the future, START NOW WHILE YOUR COASTER LIST IS SMALLER THAN IT WILL BE!!!
It's far easier to add in new rides each year than start from scratch after you've got a few hundred coasters in your track record.