wrote:
Because I plan to use these mostly for powder I feel that I should be
moving the binding further back but I can't find any information that
supports or disagrees. If this is the right approach, where exactly do
I place them???

There's a pervasive myth that you should be in the backseat when skiing
powder. Not true. Pressure the tips just like any other conditions
(but be a bit more subtle.)

I'd say mount 'em where they're designed to be mounted. You're only
going to be skiing powder 20% of the time anyway, and that's if you're
lucky. Even if you're skiing powder 100% of the time (yeah, right) you
don't want to be too far back.

//Walt