I first heard about flyboarding / hoverboarding about a year ago when I saw this video on youtube: https://www.youtube.com/watch?v=gMaDhkNJA2g

So when I saw it for rent on the beach in front of our resort in Cancun, I had to try it. The first 10 minutes were pretty rough as I could barely get out of the water and balance, but once I got the hang of it, the instructor let me do underwater dives and even a couple backflips!