STAY AWAY from any highway weigh station.... those are police .... anything wrong and you can be ticketed.....
The correct way to do it at a truck stop is:
pull onto the scale and push the button. They will ask you "first weigh or re-weigh?" tell them "first weigh". Give them any number you can remember for a truck number and weigh the whole rig. Then drop the boat in the lot and go back to weigh just the tow vehicle. This time tell them "re-weigh" ...... it is generally free to $2 more for the re-weigh. After that some simple math will tell you everything you need to know....
ps when pulling on the first time make sure that your trailer tires are not on the same pad as your rear vehicle tires... preferably if you can, have your front tires on a third pad..... this will let you know tongue weight rear axle weight and steer axle weight.
