Don't want to rain on your parade, but your average xbow set up to hunt will probably be in excess of 10# vs the light weight compound you are used to.
You still will have to lift it in position at the shot, either fiddle w/ an attached rest [more movement] or hold it offhand. It will get heavier and heavier fast.
Guys that hunt game from tree stands have two/three choices. Hang it from a hook or if possible, rest the stirrup on the foot platform, and the 3rd, if ladder stand w/ handrail, prop it on that.
As for taking down an elk, I haven't. I did shoot a cow buff at about 20 yds, Excal Y-25 [200# model] Gold Tip LII w/ 100 gr Slick Trick Mag, total arrow weight 446 gr and got a passthru including cutting a rib in two on the off side. Est. live weight: 900-1000 lbs.
There was a record type moose taken in Canada w/ their 150# model, a Vixen some time back.
Finally, check your state for xbow restrictions such as c0cking aids and magnification type sights before you get into this real deep. Good Luck, hope you gig a gagger.
Illigitimus non Carborundum
Last edited by awshucks; 10-30-2011 at 08:22 AM.