Maybe it just looks that way. I could see several, what appear to be spot welds around the edge of the rear foot well panel. I actually considered doing it that way myself. It's probably not the proper way but it seems much easier than trying to get the gaps not too close or too wide. I'm sure it's not easy when working with a big panel. Of course the main thing is to make it a solid repair. One that is sealed against the elements and is as strong as it was originally. It doesn't necessarily have to be undetectable for me either.