I can answer a couple of previous questions. They are fairly fun to shoot...I enjoy shooting them and the newest generation of crossbows are very fast and very accurate. They are fairly easy to cock either by crank or cocking rope. You can easily cock one with a crank in a tree stand. You should be able to cock one in a tree stand with a cocking rope if you can at least stand up.
No...the Ravin R20 Sniper definitely is not cheap, but it extends the season and game opportunity to a much greater degree than any rifle I own. I can go purchase a general elk tag here in Wyoming and go chase bulls in the rut and I rarely run into or see another hunter.
Again...it all depends on the game laws in your state. We are EXTREMELY fortunate in Wyoming. We can use crossbows during archery season and even if we're unsuccessful, we can come back later and hunt with a rifle. It is pretty cool...