Then the Colorado Outfitters Association, and if not them, maybe Craig'sList or the local newspapers (everyone's online now anyway). I know I have heard of transferable tags before being offered in Craigs List.
Having said that, nearly any land of significant size is already outfitted. There is certainly a chance of finding something small(1,000 acres or less), but small parcels may not always reliably hold animals without crops or at least a major drainage. Because of the down economy, some outfitters may be overextended and underbooked, so I would think a sub lease to be the most likely bet for you.
One of the things I struggle with when afield is keeping my rifle clean and in good working order. Small amounts of dust and dirt collect moisture; moisture can freeze rendering your action immovable when you need it most. I have seen this happen on multiple occasions, and over time, I’ve learned the cause and how to prevent this from happening.
The first thing that you need to avoid before going afield is leaving excess oil on the gun. Oil will trap dirt and sand in all the wrong places....