Hi folks..gravelman here in NH I have a Pequea deckover trailer...17 feet flat, 3 feet beavertail I need to know if anyone has made a support beam for the rear width of the trailer to support something 20 feet or a bit longer. It is 96" wide. Im just trying to figure out a way to fabricate something that will run the width of the very rear of the trailer for supporting long loads level. thanks much for any advice