on the carving powder aspect i defer to the type of ski you are riding.
if, like me, you're on some Spats (or other like minded RC ski) then you most likely are not carving the milk.
if, like some folks i have ridden with, you are on narrow-a$$ (no wider than say 75mm) skis, then you can indeed sink down and carve the base.
i have ridden with a number of "Old Schoolers" who actually prefer to carve powder than float through it. they like the feel of being down in the pow and then carving the base.
me, i've done that. enjoyed it at the time, but found i enjoyed floating on top a lot more.
it was fun to teach myself to ride pow (thick, Cali pow, no less) on my 198 7S's. I still remember the first time I got into the thick of it. I was at Northstar with a buddy who didn't ski much. I hunkered down, figured out the bounce and by about the third run I was in a groove. I loved it. Much different vibe than railing groomers.
my slant changed the first time I went to Utah and actually hiked up for a fresh line. I had graduated to Mantras (94mm vs my old 63mm). WOW! what a difference those skis made. I didn't have to bounce now, it was more about wide, floating turns.
my slant changed yet again when I got Spats. It took me about an hour (3 or 4 runs) to dial in the tandem style of skiing and the wider stance and the pivot versus the float or the O.G. bounce. But once I got the handle it totally changed my powder outlook yet again.
riding at BC last season i managed to ride with a local who carved pow. He was from the HH school of thought and loved sinking down and "feeling" the snow. he couldn't see the appeal of the RC skis (Spats, 'Toons, etc) until I described the sensation of riding the mountain like you're on a forklift, pivoting and turning on a dime and floating through the milk. He got it, but eventually said that it wasn't for him.
to each their own.
but yeah, you can carve powder, if you know how and are so inclined.
of course if you're just into mainlining pow you probably wouldn't know that.