I already have a 4" pipe holder on the top of my van. I actually have it strapped down by bungie straps. I'm thinking about changing over to 6" pvc with caps on each end. I'm trying to determine how to secure it. Other than threaded rod, anybody have any other ideas? I've calculated the cost at Lowes and it will cost me around $100.00 not counting the straps to hold it. I can't find any other factory designed holders that will beat that price so far.
Thanks...