Yep. I find it interesting that they aren't a part of VSA...

Yep. I find it interesting that they aren't a part of VSA because I see them a lot and they just seem to be a different kind of shake-out bar to me. (i.e the idea is to shock the market to draw out supply).

Here is a chart I've been watching and some rambling about it.

Bar 1 and 2 were quite classic wide-spread upthrust bars taking place after a fairly steep gains and you can see the weight they have carried on the following bars.

Bar 3 I found a bit confusing at the time, and was wary of further downside. However in retrospect there a couple of things which indicate it is not really 'upthrusty'. First, it is breaking out (and gapping up) of the 4.5c resistance which has seen a fair bit of accumulation(distribution?) below, second the spread is actually quite narrow w.r.t to the previous upthrust bars seen and thirdly the bar actually closes at the resistance level of 4.5c, showing a reluctance to get back down into that accumulation range.

Bar 4 was also quite confusing but also doesn't really make sense as an upthrust bar. Volume is high, price again gaps up but comes down to finish one pip above price (doesn't close gap).

Price then gaps up again with a wide-spread high volume bullish candle.