I once drove for about 5 kilometres (Dolls Point to Blakehurst) with two complete kits on the roof and NOTHING tying them on. Two boards, two masts, two booms and two sails. I thought my mate had done up the straps, and he thought I had. I was about to take a sharp corner quite fast and said to him "I hope you did the straps up tight". He gave me a blank look, and instantly I knew what had happened. Can't believe nothing fell off. Crikey, we could have killed someone.