OK.
My name is Mark Melhuish, I run a kite importing business called firebee. We are the Australian distributor for Kitewing.

As you may already know, kite surfing is really starting to take off in Australia. The Kitewing is a new dynamic which very much compliments the sport.
I fly with a 5.5m which I rollerblade and mountain board with. The acceleration is like a motorbike.

The wing really comes in to it's own on the snow!
Last season all we had to do was pull up on the side of the road and we were away. No fares, no lifts, just fresh snow.The wings are made from either mono film (very tough plastic) or dacron, the tubing is exel composite with carbon fiber tips making it very light and extremely durable. The 5.5m wing weighs 5.5kgs and when the wind is blowing your not holding it up, your holding it down!I weigh 70kgs, if you are anything over that weight, I would recommend the 5.5 metre. It gets you going in the lighter winds up to about 30 knots and 40 knots on the snow :) I feel my most comfortable in winds from 8 to 25 knots, anything over 12knots and your rolling up hill! On the snow 15 knots gets you going on the flat, depending on how steep the hill is, you should be going up in 17 knots and you should comfortably be sailing anything up to 25 to 40 knots in the snow. Off road rollerblades, mountain boards and dirt boards are perfect for grass. You can carve up hills like massive waves!Yes they do glide, but it is only advised if you are experienced. You can either be attached or just hang on! Again, it is not advised when learning. Baby steps, you can't be a pro over night.

The KW can take quite a pounding, so they should stand up to what ever you throw at it. The starting age is when you have enough coordination to confidently do one of the following.. ski, snowboard, rollerblade, mountain board, dirtboard, ice skate or anything that can be wind assisted on land. So the youngest age would be 10+ using a 3.8m KW.