How to go sandboarding
How I did it: Visited a nearby sand dunes park / beach area. The location wasn't specialized in sandboarding, just your typical beach surrounded by sand dunes, so I basically hiked up the sand dunes and rode my way down - strapped in snowboard boots and snowboard.
Lessons & tips: Go sandboarding on much steeper sand dunes. The hike back up to the top will be killer but the ride down may go smoother and faster through the sand.