[Plumper]

It kind of defeats the purpose if there is only a foot or so of travel each way from the centerline. The good thing about cabin top travelers is they have a great arc of movement even when they are only the cabin width wide. When you dump the traveler on that kind of design, it makes a difference. A little dinky traveler right aft is almost a waste of money. It would be like having a one foot long traveler mid boom. The farther aft you put it, the longer it has to be to be effective.