Do the heavy lifting first when packing the truck, expert says - Vancouver Sun Packing a truck for moving is like cutting your own hair. The more you do it, the better you'll be at it. Here are tips to help things go more smoothly: In a perfect world, all the boxes would be the same size. "But the reality is, they're not," says Dean Schroeder, a 33-year veteran of United Parcel Service, where he trains the managers who train the people who load the trailers. Heavier and sturdier packages go on the bottom, lighter ones on top. Build at least three shelves of boxes, rather than one tall (and unstable) column. For anything stacked above chest level, use a small stepladder.