The biggest question for the OP-
Did you have a calling contest and get outmatched by a person that had no intent to harm/kill the animal under a current hunting season?
(Illegal-actively and directly interfering with someone's hunt)
Or did you just run into people along the road or camp that had cameras and were calling in bulls and chatted with them?
(Nothing illegal here)
Does that change things sndmn11?
I think your second scenario is describing a conversation about the non hunters calling elk (whether filming or photographing or practicing etc) but the hunter wasn't aware or witness? If that's close, no I wouldn't write that citation.
In the first scenario I believe you are describing something I would write readily if I was dispatched to it. I think you could check your elements off with three questions:
To non hunter: "were you calling elk?" Yes
To anyone: "was there an elk?". Yes
To hunter: "did the calling interfere?" Yes
Very possible hunter could say it didn't interfere, then no violation.
Very possible no elk was present, no violation.
That is not to say that I don't see some of the gray area in that statute, it is simply to say that if I were the responding law enforcement officer I read the statute text, I see if the elements are satisfied to the point of probable cause, and I do my job. Person on person crimes are easy because nearly all of the time the reporting party/victim called in because they want it pursued criminally. I would have to research further, and I won't, but in Colorado some misdemeanors and petty offenses (the statute in question is a M2) can be pursued by a witness or victim signing the citation as the complainant, rather than the govt. holding that honor.
I don't think law enforcement officers are cruising around listening for elk calls and then looking to stick people with hunter harassment citations in Colorado. I do think they would happily write one if a hunter reported that a non-hunter was interfering with their hunt in such an obvious way. Just like most municipalities have noise ordinances that go unenforced until someone reports a violation.