Have never hunted Colorado since the time we were there and had to listen to four trucks on a ranch herd a bull for over two hours so a paying customer could get a shot..Radios, trucks and a few guys guarding the fence line kept that bull pretty much where the guy could be brought in for the shot...
We hunt public bordering a ranch where they get $5K+ per hunter & they pull that crap all the time. Last year shot several times into the herd to move them off public, finished a badly wounded cow that made it just over the property line & tagged it. They’ve sent ranch hands up to move & make noise, lie about boundaries, all kinds of unethical crap. I’m guessing that the last guy I found doing that stuff hasn’t forgotten the encounter. Armed pissed off hunter telling you exactly what kind of loathsome scumbag you are offering a fistfight while we wait for the warden or the 2 Leo’s hunting nearby have probably lessened his enthusiasm for the task.
None of that is necessary or enjoyable but landowners always get the benefit of the doubt in CO so make damn sure you are right if you have to call a warden. Reporting the crap is worthwhile - the wardens will know the character of the rancher or outfitter that way.
