F350 and cargo trailer on a step...

I'd separate them. The trailer is meant to move when it's hitched, and that isn't what I'd want it to do.

 

I've seen them hitched together, but it would make sense to separate them.

 

guess this is opinion. I'd leave them hitched. I hauled a couple military items hitched, figured securement on one helps secure the other that way. plenty of securement on both anyways, guess it doesn't matter.

 

Put the jack leg down but leave them hichted. What i would do

 

Dont put the jack all the way down. Some rough spots on road and the flexing of trailer could cause the up down movement to drive the jack foot into the floor. With a load on and a hole in the floor is a no no and damage to jack.. To be sure load doesn't move and no damage to wires and other stuff. Put a 2" in strap across the top inside of a tire and then pull down to the closet stake pocket either side of wheel. Do both units . Steer, and drives on pulling unit & Trailer . PLUS your chains.

 

I've pulled several P/U, stake body and assorted other trucks with trailers. Horse trailer, cargo etc.

I found the simplest method was to just use wheel straps on both the trailer and the truck. Larger trucks F600 or larger I would use chains. The wheels straps I have are rated 5400lbs working limit each. 5400 x 6 = 32400. More then adequate for a 1 ton tuck and small to medium sized trailer. I just let em bounce back there. They arent going any where provided the hitch is locked and safety chains are securely attached.

I have done them separately before I got the wheel straps. The wheel straps save so much time.

I recently hauled 2 F550 extended cab trucks equipped as small fire trucks. I used the wheel straps on both units and placed a single safety chain and single binder on each for just in case. No issues what so ever from Pomeroy Wa to Baltimore Md.


Hurst

 

I have no experience in trucking, but what I see is the potential for damage to the trailer tongue, and or tongue jack if this method is employed. The suspension on the F350 is going to be active while being towed, with the tongue jack down it will act as a fulcrum between the truck and the remainder of the trailer. A few good bumps in the road and the rebounding of the F350 suspension and that trailer tongue is likely to get bent by the force, whether all at once or as a cumulative effect.

I would not choose to lower the tongue jack, I see no reason. The hitch and coupler are meant to articulate, leaving it active as if the truck and trailer are moving down the road allows the suspension on both parts to work as they should.

FWIW