Remix of Traxxas Ski

Not really traxxas specific at this point.
This is the right side only at this time. Both rbrutsky's v1 (square) and v2 (rounded) skis.
Added lines on the bottom to add grip in medium to soft snow.
Added support on sides of the vertical part.
There is an issue with the mounting holes. I need to repair the surfaces. Looks like an issue I am having with Sketchup in the latest version. I will be fixing this.