A few months ago, I posted a video about a hybrid snowboard/surfboard that worked beautifully in both conditions:



Then we found this video of another hybrid sport - ski surfing:



So then I started thinking about what other hybrid sports are out there:
Speed flying - combination of skiing and paragliding



Snow kiting - combination of snowboarding kiteboarding



Sky surfing - combination of boarding/surfing and skydiving



What other crazy hybrid sports do you know of out there?