Neat, not somthing I would do or tell someone to try but its pretty cool!
That horse is pretty broke to not care about the person racing behing him, the tug of the ropes, or the feel of the rope tight against it's body. The horse looks more 'game' about the jumps then he does about the person on skates!
LOL, I think it is pretty cool! I can see me doing something like that with an X Gamer - you know that extreme Skaters and BMX Bikers doing all those stunts on those 1/2 pipes - I can so see one of those doing it, but on rollerblades.
Now that would be cool to do as an Exibition at a Horse Show.