extra support
While the idea sounds good I think that over time you are going to create more problems with this. The campers over the years have been designed and proven to withstand the torque that your bed experiences every time you go over a bump, rock, uneven surface or even up a hill.
To make a point of this, go over a speed bump at an angle so that just one front tire is on top of the bump, now look at how much flex is going through your truck bed and the camper. I have seen this flex enough to put a line in the side of the camper while it was happening. The camper is designed to flex in this way with the bed of your truck.
Now putting the extra support down the side rail as the picture shows is just going to increase the stress that the flex causes transferring more of the bed flex into the side wall of the camper. This is also going to increase the vibration of just everyday driving and every small bump into the camper.
Again, the campers have proven themselves over the years to hold together and the few weak points that we have found over the years have been fixed.
I will never say that we can't still improve upon the design and our customers have come up with a lot of the improvements over the years for us. I just don't think that this one will help in the long run.
The other down side to this one is the wear and tear it is also going to create on the top of the bed rail. Dust will get into that area and over time just chew the paint right off for you. While this will not hurt the overall durability of the truck, it is just a cosmetic consequence of the application.
