Do you weigh your scrap before you take it?

Hoping for some advice,

This question is aimed at the heavier scrap dealers,
Do you weigh your scrap before you take it? If so, what's the preferred method, floor scale vs hook scale.
Which brands for the scales are the best to go by? Or is it worth just sending a test weight item (5lb plate exp) with the shipment?

Im already past 1500lbs and doing it by a bathroom scale is ridiculous....
Why gathering so much?, hoping to ship international, have a few different scrap yards lined up but that's for another thread.

Really appreciate the advice.