Example of transporting a cart in the back of a Pickup when using a 2 horse trailer.
The cart is strapped down with two sets of straps holding it forward and one set of straps holding it back. These are heavy duty ratchet straps. The two sets of  front ratchet straps are hooked into the bed pockets. They are then hooked through motorcycle Soft-tyes that are looped around the axle in the back; and around the shafts and crossmember in the front. Soft-tyes are used so as to not scratch the finish on the cart. The wheels actually roll up against the wheel wells of the truck. The set of straps that put pressure on the shaft are left slightly loose. The cab and the bed actually are suspended separately. If the shafts are tight against the cab the shaft will rub the top of the cab; and a shaft could fracture from the pressure
There is a second set of straps that go from the back of the cart and hook into the bumper supports. These back straps prevent the cart from flying forward in a sudden stop.
This photo shows a close-up of a Soft-Tye. It is looped around the axle.
The pickup truck has an extended receiver bar. The trailer has an "A" frame that extends several feet in front of the trailer. When at an event the trailer is jack-knifed at a right angle, ramps set, and the cart is rolled off the pickup bed. The trailer does not have to be disconnected to unload the cart!
Padded blocks are placed between the cart wheels and the side of the pickup bed. The cart can shift during transport and rub the side of the pickup bed. The blocks keep the cart centered.

The ramps and anything else in the bed are chained or strapped down to prevent them from flying out.
A big part of carriage driving is getting your horse and carriage there! Generally it is preferred to have a big trailer and haul horses and carriages together. This is an option for people with a 2 horse trailer . If you have a photos of your carriage hauling setup-- please share them with us by emailing them to the webmaster.