Reason I skiboard rather then long ski is I used to aggressive skate quite a bit, so that helps a ton with balance. You've got no room to land backseat with that.
I'm surprised you didn't go for any inverts into pow. When i took a set big mountain riding one night I was going for misty 5's off errthang. They are such a pain in the ass on rails though
Ive been thinking of something like that. When 333skis starts doing inserts (skiboards basically use snowboard style mounting, with regular ski bindings on aluminum risers) Ill hopefully be getting something in the 140 range. though its actually not that bad with the 110s I ride (137 underfoot) with a 4cm setback.