<font color="blue"> ...ways to properly secure a CUT to a trailer for towing ? </font>
This topic has been discussed before. My take is there is probably more than one way to do a good job securing your tractor. Obviously, the rear chain(s) prevent forward movement, and vice-a-versa. Positioning so there's a little positive tongue weight is a good idea. My tiedown technique is this: Four points on the trailer; two by the front corners of the trailer, two by the rear. Two points on the tractor; bumper/weight rack in front, and draw bar in back. One chain in front, one in back. Front chain connects front bumper to forward trailer tiedown pockets, and back chain connects drawbar to rear trailer pockets. Implements are attached to tractor, so I don't tie them down separately. I use a grabhook mounted a foot or two from the end of the front chain to take up slack, then back the tractor a couple inches 'til the chain is tight, then set the parking brake to keep it tight. I use a rachet tie down to take up slack on the back chain. No recommendation for "properness" is made for my technique...it's just the way I do it. A professional trucker, on another thread, suggested checking the chains after 1 mile, 10 miles and 100 miles.
I use grabhooks on the ends of the chains to catch the pockets welded to the sides of the trailer. The only really good piece of advice I have is this:
When attaching the chain "end hooks" to the trailer, drop them through the pockets and hook the hooks on the TOP edge of the pocket. That way if the chain goes slack for some reason, the ends will stay connected to the trailer. That may prevent an inadvertent, catastrophic loss of tractor from trailer.
OkieG