My small town has a feed store with feed mill and a single platform scale that is open 24/7 with no charge for weighing.
I generally weigh on a sunday or after closing hours when their not using the scales.
For weighing just the truck I pull on the scale and stop just before the trucks rear tires reach the scale for front axle weight.
Then all the way on for a gross....then pull forward till the front wheels are off the scale for rear axle weight.
Then I do the same for a truck trailer combo and weigh as each axle hits the scales while pulling on the scale.
Same while pulling off the scales.
Be sure and get your trucks separate front and rear axle weights as a gross weight doesn't tell you if your over a axle/wheel/tire/suspension capacity.
The CAT scale with its separate platforms makes it simple.