You need to use a trailer not a truck for mulching. You let the mulch place load your pallets up for you. This way you able to put the bags straight onto the dolley. No unloading from a high truck bed. Super easy. If you have to manually stack bags in a truck or trailer your going to waste a lot of time. Plus you can't get much mulch in a truck. I've seen many yahoo's throw the bags in a trailer in a huge cluster fruck pile. Then it's a wasteful pain to untangle the pile. Like I said prior I can load a dolley with 1/2 yard (six bags) in ten seconds easily. Try loading a half a yard in a wheel barrow in ten seconds. Not going to happen. Plus you don't see to many wheel barrows that can either hold 13.5 cubic feet or hold the weight if it's a single front tired wheel barrow. One pallet of mulch is 4.8 yards. I can put 28.8 yards (six pallets) of mulch in my trailer. On an average job with a five man crew we can burn through the whole 390 bag load in 4.8 hours. That's 17,500 pounds of mulch. And best of all there's no damn back breaking shoveling. It is so much more efficient to move bags into high density beds and spread the mulch. My bags pop open with one clean jerk. You can turn a bad sideways and take it behind a hedge or other tight spot a huge shovel won't fit as well. Pretty much all the big companies TruGreen, Valley Crest, Land West and on and on are all on board with bags for built out properties. They spend tons of money on consultants and bean counters to insure efficiency. Those companies didn't get huge because they are wasteful and don't know what they are doing.