The more restrictions they have the longer your there. How many times have you sat due to a driver putting on every Bungie, walking around the truck 100 times inside a building when it's sunny and 60 deg. Outside?
I try not to run tarp loads. I don't know if they need tarps till I get loaded or not. I don't have an issue tarping my issue is customers that can't offer anything to help the driver. Hell even if it's just the one with a bar that lifts them up even if it takes extra time. Least I know I won't be falling off my load and busting my head open lol