Here are some nice videos available on the internet:

Philippe from Horue make strapless riding look so much fun. The level of hydrofoil gear and riders have really improved over the last few years! Check out their tutorials page for more inspiring videos: HTTP://WWW.HORUE.FR/TUTORIELS/

The future of racing will most likely be foilboards:

Marc Blanc shows how to ride strapless:
Want to kite in light wind? Check out Gunnar Biniasch's video: