Doesn't work. We start our unload 2 hours before anyone arrives to push anything, and we don't have enough U-boats to get through those 2 hours without having to move to pallets or other vehicles. We could order more U-boats.. but there's no room for them. No room for the ones we fill, no room for the empty ones. This is with maxing each U-boat out with as much freight as we can. It just doesn't work.
In addition to that, we have no choice but to break the rule is that no U-boats can be on the floor unless someone is pushing them because we simply don't have enough room for all the full U-boats during the unload, or even after. It's a clusterfuck. Even when TMs arrive to push the U-boats, they only manage to bring them back just as we're done unloading the truck.
Tried getting TMs to come in earlier, but DTL and STL shot that down. We can no longer stage pallets off the truck on the salesfloor either, so we block the other bay with them and develop a long line of angry vendors. Our trucks are too large and our unload area is too small to work with this process. We only have 2 bays for unload, and it's impossible to keep the 2nd clear while we're unloading the first. Our STL does sympathize with us, but she has no choice but to comply with the DTL's orders. ETL does what she can, which helps us stay afloat, but this new process is clearly not a "one size fits all" -- yet we can't make changes to suit our store layout/size/freight/workforce.