If you carry them on the top, take them inside if you’re stopping overnight enroute. I always take guns in too.
I believe Arkansas has a regulation about transporting antlers and skull, etc due to CWD. There were some cases a few years ago about guys stopping to eat and their racks and meat were confiscated when a warden happened to see them in their vehicle.
I’ve carried them inside a GMC Acadia with three big coolers as well. Put the coolers in with the drain plugs facing the rear door where you can just pull them aft a bit and drain any water from melted ice as required. Then fit the antlers in and pack around them. Soft bags beat suitcases by a mile when it comes to packing.
