With 2 great rest spots and 2 crux sections, this is a great, long warmup problem or excellent endurance fest to run laps on. Slightly harder now due to the lack of the undercling flake left of Three Pigs that disappeared in late '07. Many variations exist as well. It is much harder to go straight left from Three Pigs now and easier to go higher and use the slopers. Some go high around boot flake for a slightly easier version, while others go low there for the V4 version.
Probably can be done as easily as a v1-2 or as hard as one wants to make it.
Location
Not sure where the "official" start is or even if there is one. Just go around, around, and around and that's sure to cover it.
I'd hestitate to call this a V3 now after a key hold fell off when traversing left from Boot Flake.
Also, I haven't seen anyone send the low traverse in a long time after a foothold busted (again, near Boot Flake). Even then, for a V4, not many folks sent it regularly. Mind you, I'm pretty wimpy but whenever I did it, bystanders would tell me that I was the only person they had ever seen do it. It was probably only V4 after you had it wired.
Too bad about the busted holds, but hey, that's Stoney.