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I would be interested to know how that board turns out, and how a P tex top sheet does.

I am not really sure it will prevent snow. I think there are two types of snow buildup, one is just heavy snow pilling up, the other is more the sunny but colder days where you are hiking into the alpine, and ice droplets start to form and melt/ freeze, allowing snow to build on that. Anyways, I will try some stuff next time I am out. It would be interesting and worthwhile to find out what works and what doesn't, it is pretty annoying to have 2 pounds of junk on your board.

Edit
http://offpistemag.com/permalink.asp?id=552

This post mentioned Armor All in the comments, that stuff you use on the inside of your car. Maybe worth a shot?

I used PAM cooking spray once and it seemed to do the trick. The downside is that the climbing wires seemed to develop more play (less friction?) and one ended up breaking.

Some type of nano stuff Harvard scientist came up with.



Also carbon fibre seems to have hydrophobic qualities without any coating already. So a carbon topsheet might not be a bad idea.

" Similarly, silica nanoparticles can be deposited on top of already hydrophobic carbon fabric.[33] The carbon fabric by itself is identified as inherently hydrophobic, but not distinguished as superhydrophobic since its contact angle isn't higher than 150°. With the adhesion of silica nanoparticles, contact angles as high as 162° are achieved. Using silica nano-particles is also of interest to develop transparent hydrophobic materials for car windshields and self-cleaning windows.[34] By coating an already transparent surface with nano-silica with about 1% wt., droplet contact angles can raise up to 168° with a 12° sliding angle."


Also a coating like Neverwet is not exactly new. 3M has had similar coatings for ages: http://solutions.3m.com/wps/portal/3M/en_US/3MNovec/Home/ProductCatalog/?PC_7_RJH9U5230OOA50IEKHCMDN11H0000000_nid=JZ15KT89H0beRSFFXGDP37gl