I would consider some lighting even if its just a small battery powered light. The dvx works well in low light and 1/24th lightens thinds up quite a bit but snowboards move and 1/24th shutter might not be ideal for what your shooting. I'm sure you can come up with a way to give the lens some light to work with. I'm been experimenting in this area myself with mixed results. When I get the look I want its often accompanied by too much grain. Post some grabs when you get some and let us know how it goes. Good Luck.
Its good to see that Unix mentioned whiete balance. In my experience that is the MOST crucial factor. I say it because I could improve my low light results of the DVX considerably only by tweaking this factor alone.