Interesting thread. I've bowhunted in Idaho for 31 years - never with an outfitter or guide. I've always been a do-it-yourselfer. I have thought about using an outfitter on occasion, just to get back into remote country that is virtually impossible to reach on foot, especially if I shot an elk and needed to haul meat out. I have spent lots of time scouting and learning different areas, and yes, it does indeed take a great deal of time to become familiar enough with a given area to be able to consistently get in to elk. The most successful elk hunters I know are those who devote most of their time to learning the country. However, I assure you that just because there are elk in this area or that spot this year is absolutely no guarantee they will be there next season - or even next week for that matter. So, whereas I feel it would be a bit "dirty pool" to deliberately mark spots by any means with the intent to return and hunt without the outfitter, the person who did so would still have no certainty of finding elk and very likely would have to do some searching and scouting on his own anyway. And, if it was an area only accessible by horseback, he would have to deal with the logistics of either bringing his own stock or renting local stock to haul game if he was successful. Colorado might be different, but here in Idaho there is a lot of real estate for those elk to wander around in and they do wander. Outfitters here have their designated areas (public land) that are usually large enough that one or two "honey holes" aren't going to make or break their guiding season. From an ethical standpoint the action under discussion may not be right, but from a practical reality, at least here in Idaho, it is of little consequence, as I see it.