I loaded this at the dealer the other day ... I just drove it on, and eyeballed how level the truck AND trailer were sitting, then kept adjusting forward until it was mostly level ... Chained it down, and then went and weighed it ... It pulled good, I do have a weight distribution hitch ...
20' trailer. Without measuring, I'd say the front axle is close to the middle of the trailer, or slightly behind the center ...
I took this picture just after I got home and was ready to drive it off ... And since I liked how it pulled, so I "marked it" so I can put it back on in same spot ...
Remember to fasten your load down too, a pet peeve of mine is a lot of tractors don't have a designated tie down point ...
At least this guy I saw down in Louisiana had a tail wheel ... Nothing holding it on but one chain on the loader, well ... other than gravity, and "maybe" the parking brake, or in gear!
Probably a bit "tail heavy" which cause the swaying problem ...