One person holds the cart, the other fills it. Two of you dump it out where it's supposed to go. As long as your cart can carry > 2-3x the load, it should be mo

One person holds the cart, the other fills it. Two of you dump it out where it's supposed to go. As long as your cart can carry > 2-3x the load, it should be more efficient (or you can load it with buckets).