I looked at DeMark once and concluded it was for day traders, mostly in options and futures, using very small time intervals per bar. That may not be how it is used, but that's what I concluded. That style doesn't interest me at all. Besides, I like ATR better because it uses two days of OHLC data, and gives an indication of volatility. I don't even like all the time I've spent trading now, but I've gotten a little bit hooked on it, as my gains on 18 trades since the beginning of the year have totaled 65% while I've had two losses totaling 3.15%. I might have been lucky because I used my trend system for the first time to catch the big move down at the beginning of the year, and I stayed in it for the duration. I would have made substantially more on that one if I had gotten out early. I quit using that system a trade or two after that because it doesn't work well in a sideways, chaotic market. Since then, I have been using my overbought/oversold system which hasn't been backtested, since I got a little burned out on writing software. I need to get that done, though, because I can see that I'm screwing up frequently by getting in too early and selling too early.
When I start writing software again, maybe I'll look at the Pivot systems again and look at using longer time periods of data. I like going outside the box and trying new things.