F350 and cargo trailer on a step...

I have used 4x4x8's strapped/ chained down tight in front of the wheels. Wood chocks are the most widely used , nail them to floor. couple of nails usually does the trick . They just need to prevent the vehicle from moving forward and rearward. I always set chocks in at a slight angle to not just stop forward movement but sideways movement also.
When I use 4x4's front and rear , I sometimes, depending on the vehicle, lay a 2x4 long ways on the 4x4's to stop sideways movement. couple of nails on each end. All this is in addition to chains.. Additional securement is so much better than just enough . You can have not enough one time and pay for it but you don't get punish for having more than you need. I may take a bit longer securing and a little more taking it off but Never have I been cited for not enough securement. Thank you for asking about this securing the load of yours. . Many would not do it and pay for it later. Shows good sense on your part. Safe motoring.

 

How do you plan on hauling it? Hooked or unhooked?

 

Ideally with the pickup truck I'd use RTJ hooks and chains. That would take any bounce out of the suspension so you could leave the trailer hooked up. I carry 8 cluster sets and they come in handy for all sorts of stuff. If you buy some, make sure you get the stamped ones (G7/G70) so they are rated. You can wrap the trailer axle with a chain and have it pulling fore and aft if you leave it hitched which would be best if it's loaded. If it's empty you can lay the tongue on the deck. I would suggest putting some wood under it to prevent damage to your trailer. Make sure the trailer jack stand is up and not supporting the weight of the trailer on your deck. The trailer might have areas underneath it where you can hook to the frame and four corner it, but usually you can only do that with more industrial style trailers. As far as chocking it's up to you. There is nothing in the regulations about chocking wheels as a wooden chock has no rating. The only things that "count" for the aggregate load securing totals are rated appliances i.e. chains, binders, straps.

 

If you do that just be careful of any wires that may run across the axle for brakes, if it has any.

 

Unless you haul a lot of vehicles that's what I would use, just X them on the outside so that they pull forward and backward.