get a reverse camber board. things just float through pow, even wet stuff.
this past season i rode a capita indoor survival 158 in pow, and it was wonderful. also, when my area got dumped on, i took out my 152 horrorscope, which is definitely not made for pow, but it still worked much better than traditional cambered decks i owned previously which were much longer.
if you like your custom, i would look into getting the custom v-rocker, or any reverse camber deck. but i cant say enough good things about my indoor survival.