what is the difference between a wakeboard, wake skis, and wake surf?

Wakeboard has bindings, kind of like a snow board with fins, made of fiberglass. You ride anywhere between 19 - 24 mph.

Wake skate is a shorter wakeboard without bindings, made of wood or fiberglass, you ride about the same speed as wakeboarding.

Wake surfer is like a surf board. Can be made of many different materials, designed to be ridden on the wake real close to the boat at a speed of about 10 mph. To wake surf, load the rear of the boat on one side, drive the boat in a slight arch to the weighted side of the boat producing a surfable wave. You don't need a rope or handle once riding speed and wave condition is right.

Skis are just skis.

I would have to say that Wakeboarding is the best. Its really hard but an awesome sport!

dunno, I'm not awake yet.