This is the key issue.... this is the trickiest part, and exactly what got our trails vandalized one time. One must be extremely careful how you approach trying to steer people's activities, because offense will be taken very easily. Some people you just CAN'T deal with, and no amount of diplomacy will work, but most can be brought around if you outsmart them, instead of trying to be mr. badass, or coming off like you own the place. (public land)I told him it wasn't cool to change stuff without talking to me first and i let him know i was angry that he had done that.