Sure, trees are my go-to strategy too. But they aren't always available.
Another tactic is to follow another skier, using him/her as a "moving fog pole."
Yes. Especially if you know that that skier knows the terrain intimately and won't lead you into the rocks.
Hah. Reminds me of last season - I was with a small lesson group, and we skied into the powder of George's Thumb. It's a mellow pitch, but it has swaths of major shark fins. There's a specific route to follow. We had a conversation at the top to make sure everyone knew the line.
Well, I've noticed that people often follow a ski school group, seeming to think that ski school never skis anything challenging. Apparently some guy followed us, not knowing the line, and then went up and semi-bitched out our instructor for taking "him" down a dangerous run with rocks!
As I recall, it was a mixed conditions day with some clear and some so windy that I got vertigo standing still. But regardless, that run is dangerous if you don't know the line. I think
@RachelV knew someone who hit the rocks and messed up their face that same weekend.