I have flat towed my 88 all over the place with various tow vehicles the best being a full size van as a pick up is too light on the rear end and as flat towing does not add any hitch weight that is a real problem. You having a slide in camper is perfect and should have no problems. My hitch pins to the front and I can either quickly remove it or tie it upright to drive the Landrover. I only have unlocking hubs on the front but never thought of putting them on the rear, it is a good idea. I just select 4th gear and put the transfer case in neutral, I also run a good synthetic GL-5 gear oil of 75W90. Be careful turning tight on slippery roads as the front wheels on the Landrover can slide and jack knife the landrover into the back of the TV. Backing up can be tricky but just keep the landrover as straight as possible. Now I'm looking for a set of unlocking hubs .lol
1971 series 2a 88, series 3 trans, Fairey OD, owned since 1978.