[DC]

My TJ is close to being set up for flat towing behind my Dodge Ram 3500 and an important item remains ... getting a hitch extension bar to accommodate towing when our Outfitter Apex 8 slide-in truck camper is on board.

Since I am essentially a towing novice, is there any rule of thumb as to how long a hitch extension should be to adequately deal with the rear overhang of a camper, but without it being longer than it needs to be? Without some words of wisdom in this regard, it seems like I should be in the ballpark if I dropped a plumb bob down from the center of the rear wall of the camper and then laterally measured straight back from the opening of the factory receiver back to the plumb bob line. Does that seem like a reasonable approach to take?