This is what I do here in Alaska. It’s water tight, light weight, versatile, and inexpensive. I can U bolt it to my yakama round bar roof rack, bungee it to my hitch tray, put it in the front compartment of my travel trailer,...3-4" diameter PVC tube with screw on caps attached to your rack is a pretty popular method in Oz.
Pretty much how I did mine!! Big Penns really balance well and cleared the crossbars well (Jigmasters, squidders, 4/0, 5/0, etc.).
Riversmith may be making one for spinning outfits now.Wanted to revive this thread to see if anyone has any new/updated ideas or products.
I live in Florida and primarily use a spinning reel and pole setup. It seems most of the commercially available roof top options are for fly rods with the reel at the far end of the pole, but must of our poles will have the reel 6"-9" up from the end. I like the conduit and tackle box set up, but a tackle box deep enough for my reels would be massive.