Hi Mark,
There's probably only a couple of us doing any skiing/skinning, and I've been riding the sled lately more than anything.
Not sure if Duncan and Shanna will see this just yet, but they've ski'd off Pinecrest Peak taking different lines from the look out area above Herring Creek Dome. Putting in from the Lake, taking the line to that mini lake then east ward skinning up, iirc.
Talked to a riding friend who has actually ridden off Herring Creek Dome. I'd be nervous about avy off those slabs.
More of a skin up and mellow terrain, is from areas past Strawberry on 108, east of the hwy. Look for the big pull out on the left for the parking. Sometimes the snow plow berm has to be chopped so you can get on top of it. Nothing steep. But that was a worthy few hours one afternoon for me.
I have seen one guy taking the FS roads out from Cow Creek quite a ways. May have been just a skin up and out for a work out rather than good turns.
I've skinned up Gooseberry road to backside of Dodge. That's a cool way to get some runs. But for more quiet the Burst Rock area, like you saw, is good. The snow machinas avoid that area. Spring skiing of course is the ticket up at the Pass.
Hope that helps a little,
Rob