RE: what is proper Etiquette?
I would have done exactly what you did. I have in hunting public property in the past come across the "perfect set up" only to find someone has beaten my to the punch. I know that I'd be upset to find someone in my stand and becasue of that I simply move on. On private land with 165 acres there is plenty of room for 6 guys. It might have been the perfect vantage point but by scouting around you're likely to find a set up just as good. If you're intension was to just scout a bit, moving 50-60 yards away and scouting from a climber or the ground is the proper decision, atleast IMO.