I lost my "surf" van. Have to go back to the 'ol 4 door with roof rack. Question is, does racking a board and driving fast for an hour, effect the board's structure?
I watch the boards flexing as I drive, I'm seeing very light signs of stress cracks in their decks that I never noticed before. They are cradled in the thule hang two, so it's not like I cranked em down with rope on pads.
Can you shorten the life of a board just by using a roof rack?
Make sure your board is upside down and the fins are in front... You see them flex when they are wax up with the nose forward. The front of the board gets pushed up because of the rocker. The nose is pointing up so when you start driving wind will push it up...
It is bad for your board and you look like a kook.
guessing your board is glassed and see the cracking its probably the way you have your board on your rack. Like how nynj said, I always have my boards fins front and wax on the pads. I carry both my glassed and epoxy on top. but if you can make it work where it can fit inside your car (put backseats down, arrangements, etc) carry it inside to keep flying road debris from damaging it.
Generally I put mine in the passenger seat with the seat reclined. Pull the head rest out if you have to. Doesn't work for a longboard, but I can get 3 or 4 short b's in there. I only put them topside if I have to.
I would try to get them in the car... If you don't have the right kind of rack then the actual straps can eventually cause pressure dings on the rails and eventually cracks... If your just cruzing around town it's ok- but if you gotta tighten Them up for high speeds ... Ya well.... Put the board in a board bag or get it in the car some how... Back in the day I had a ford escort and was able to fit a 9'4 longboard in it...