Okay not every trailer and truck combination needs the load truck to be pulled on motor front. The idea is to have 51% or more of your load to the front but you don't want to overload the tongue it can cause you to lose control of your truck also or break the hitch. The best way might be to go on backwards, but watch the hitch height to see if it is going up or down as the truck is loaded, you can use a sledgehammer with a piece of duct tape on the handle to go by . Get the truck on the trailer then stop get out and look at how the trailer and your pull truck are sitting compared to how they looked without the load you want them level with a little more weight on the tongue. If it all looks good then stand on the tongue and bounce to see if you really have downward pressure on the hitch or if it is pulling up on it, you definitely want it to be pushing down on the hitch but not so much it is lifting the front of the pulling truck. Oh the duct tape is also great for the ends of your chains to keep them in place. You can use the straps to tie down but I would suggest a chain and ratcheting binder on the rear of the frame and front also to stop sway and bounce and to act as safeties for the straps. Go a mile or two then check everything again. I am saying all of this not because you don't know what your doing but because it might help you or me remember or someone else to learn something. Have a safe haul and it's great getting a ride back that you thought you would never see again.
