well i tried it out yesterday. got up to about 60mph, went over some bridges and there was a bit of wind. all good. its very sturdy. 1 more bungy cord will make it more secure. im just stoked i can go surfing again. i used to live right on the beach, but moved away, but i always work near beaches on the north side of sydney. its a great feeling to be using the Enfield in this way and the rack is great. just plop the board on and go. easier than tieing a board on to a roof id say!