Here's a fantastic product from Northcore - the "Lowrider" Moto Rack Motorbike and Scooter surfboard carry rack. The rack is a simple design made from lightweight alloy, with a steel mount and high quality EVA foam to protect the board.
The rack fits to any scooter, moped or motorcycle which has a rear carry rack attached. The moto rack will carry most boards right up to 8'0 mini mal. The rack takes only a few minutes to fit and is easy to disassemble when not being used.
The rack is designed for lower speed urban riding/speed limits so is perfect for a run down to your local beach or taking on holiday if you're hiring mopeds, avoiding traffic or parking fees. The Moto Rack is packaged in a bright retro inspired heavy weight cardboard box, including fitting instructions, so is ideal for storing your rack when not in use.