I used one of those 2 wheel sup/ kayak trolleys, and tied the nose of the board to my seat. Worked a treat and cycled it quite a way. Just need to be careful to ensure theres enough clearance between the wheel and board. A rear bike rack would be ideal to assist in this.

Loz79 said..
Any one know of any decent rack that will carry a SUP that I can fix to my pushy?.... Only needs to handle a 7.10 x 27.5 x 4 board... Be handy when I'm on holidays in the caravan, i can peddle down to the surf n save the long walk

I've used on of these http://www.ebay.com.au/itm/Surfboard-Bicycle-Bike-Carrier-Rack-Kiteboard-Paddle-Board-Shortboard-Longboard-/191611823188?hash=item2c9cf46454:g:UZoAAOSw9N1VqIFf

Wouldn't want to go too far with it though, I had a 7'10" x 31" and that was probably the max (couldn't turn to sharp the side the rack was on).

I have been pulling my boards to the beachs in our area for over a year. This is a kayak cart that I use. I have transprted up to two boards at a time with no problem. Great way to warm up before surfing. Many positive comments from surfers. To attach the board/bag to the seat make a loop with something durable and loop it over the seat horn and trailing back on the seat. You the sit on the loop when riding. Easy to detach when at the destination.