Hey walle 12,
Welcome to BGH. I should also say welcome to CO. I would point you in the direction of the DOW. (dept. of wildlife for all not following at home) The website is rich in information on wildlife densities, distrubution and all the rules and regs you will need.
Hunting is not usually a pursuit where instant gratification abounds. It takes a lot of time, practice, resources and patience to be a successful hunter. So when someone decides that an area they hunted only once without taking an animal is worthless and devoid of game, I don't quite understand it. These people usually jump from game management unit to game management unit; trying a new one every year.
Now don't get me wrong, there are people that just enjoy scouting and hunting...