Can the RhinoPro flooring handle people standing on it between the support bars of the roof rack?
Yes. The RhinoPro flooring is made of high-density polymer materials and can withstand a 310LB guy jumping up and down between the roof rack rails on one foot without stressing the flooring, however the truck may take a beating. And yes this has been done, but not recommended for the sake of the roof rails. Also the impact characteristics of the flooring make it ideal for just about any abuse you can think of.