This is my own design of skis. I've been using the same material for many years with great success. They look more complex, but that's how I like them , it is a mater of preference and they've always worked flawlessly. The material is plastic(here in apartments it is used in bathrooms to cover the pipes behind the sink from floor to ceiling, the bathroom mirror it's on it). The springs of the skis allow the small movement necessary to taxi,and land, once in the air they stay parallel with the fuselage. I like better to fly in winter, and now I also have the Transmitter glove and heat system in it. Here is a video edited from many videos with multiple cameras, of my 1,9m Cessna 182 Skylane - winter flying. And the pictures are of my GP CAP 232 50cc. Enjoy!
http://www.youtube.com/watch?v=bGyoiWCIg2g