I've never been happy with the carpet covered 2x4 keel guides on my trailer. Decided to upgrade to something I hope will be more effective. Framework is build from some original parts, aluminum angle irons and stainless brackets. I'll cover the framework with PVC tube and maybe wrap that in carpet again. The frame that parallels the skid plate is about 6 inches higher than the lower end of the wooden guides were so I'm hoping it will do a better job of getting the keel on the plate.