why two fat people? sag should be set with the weight of the person(s) most often on the bike. Im gone. Way too much bad advice here (on setting sag), and I do not know why you wouldn't educate yourself by watching a 20 minute vid.
That is if he wanted to determine total travel to set sag as a percentage (without having to disconnect the shock as it sounds like it is in an ugly location). Obviously most of the sport bike people are setting sag without looking at total travel (probably because most sport bikes have a similar total travel?) so determining total travel does not seem necessary in this case.