Cheers for the update bud.
Could be taking up employment in Japan next winter and just purchased a Proto, was definately expecting to buy a powder specific deck if I head to Japan but its good to know if funds are a bit tight its not a necessity!
Depends where you ride. I ride in Nagano and because the terrain is a little steeper I would say you can get by on the proto, maybe the occasional silly deep day where it will struggle.
If we are talkin hokkaido with flatter terrain and deeper snow I would say you want a proper pow deck. Hakkoda as well.
If you have the means a pow deck is the way to go but if you know how to ride pow and if you are not a big heavy guy the proto does very well indeed.
I ride lots of pow and regularly blow past guys on their fish tails (mostly aussies) on my proto.
Rider will always be more important than the board. I aslo know the runs at my regular resort and that helps a lot too.