I've wondered the EXACT same thing man. I don't know if a ton of the resident guys just lie on their surveys or what but I don't see how the success rates can be so low. I mean come on, you're using a gun during the rut. Sure it's open sights but still, it's a gun. Obviously it still isn't an easy hunt, but I would expect success rates to be higher. I think ColoradoV is right in that most guys are just lazy.
And just in general, I don't know how accurate those CO success rates are. I was watching a deer muzzy unit for a few years that was consistently 0-5% success rates. I talked with a few guys who had hunted it and they said there was absolutely no way that was correct.
FWIW, I had a 2 point muzzy elk tag last year and shot a good 5x5 the first day. I was very fortunate and was just in the right spot at the right time and wouldn't consider that to be normal at all. Shot it at 140 yards. If I were you, I would try and burn your points as you don't gain much by having more than 3 points.