hello all I am new to this forum and am working on a an old m416 trailer. Trying to restore it and add stuff to it. One of my questions is about adding a portion between the back and the fender and between the front and the fender. I have no idea what they are called. I jave added a picture I found and circled the part I'm talking about. How do I make that part to be strong enough to step on it every now and then to reach something on top of a rack. Thanks.