The new frontier of this sport is open ocean down-winders.
Imagine a board 12-14' long that can pick up swells and ride for 500m's!
This is now a possibility with boards like the DC 12'6 or 14' Ocean racers.

More info on DC racing boards HERE.

The boards weigh in at around 11-13kg depending on the construction.

Start upwind with the wind behind you and let it push you onto ocean swells that you can ride for 100's of meters!

Here is a taste! Awesome Downwind Video.

Dave Kalama, Livio Menelau & Devin Blish - Maliko SUP Downwind Maui-- by Standup zone.com