Yes, and too each other with cross bracing as well. This all gets pretty busy inside the cabin when done to sanctioning body standards, but they have learned a few hard lessens over the years developing them. I still say you have to imagine your passenger or yourself hitting the front hoop with out a helmet. No amount of padding is going to help you there.tn. if you want to make these really sturdy, they need to be attached to the frame rails ... which means punching holes in the floor.