We recently purchased a used Lesco 16hp debris loader to help us with some leaf removal in a 160 townhouse community. It has the swing away hitch and we are mounting it on the rear of our F550. The part that extends into the truck is 6" square and we need to extend it about 2 feet further into the truck. What are your suggestions? We tried some flimsy roofing tin but it was quickly worn away. We need something a little stronger. Thanks for your expertise.