The Jug Problem 

Start sitting on obvious crimps and climb into starting holds for a V3.

I (respectfully) disagree....
The sit start does not bump the V0 to a V3. I do believe it makes it a good standard LCC V1 though.

Perhaps you topped it straight out? My understanding was for the V0-1, you stepped off to the right once you got the highest jug.

I did the V0 standing and then repeated from the crimpy sit start. I would have to agree this makes it harder, but maybe to a V1+ at the most. Can't see calling that a V3. If you keep left instead of walking right on the large rail near the top, I could see that that looked much more difficult. Maybe that is where the V3 is coming from?

This is rated V3 from the sit in the black bible and I'm going with Mike Beck.