I'm curious about these strategies.. people use the same strategies when they play blackjack. They play the minimum, they lost, then they play twice the minimum and so on.
What they don't realize is that they waste a valuable and most often unaccounted factor TIME!

You can easily buy or sell ALL your coins at a single price, if you re-buy or re-sell at a better price then BAM!!! you made a shit ton of money compared to the averaging strategy you use...
It's kinda like the "diversification" approach... when all the so called financial advisors recommend to diversify...
that's code for "I have no clue what will go up or down, so to cover my ass, I'll recommend you to bed on all the different stocks so in the end I make money off commissions and you break even"

Anyways... I'm not criticizing  your strategy, just pointing out what I think is the common denominator in many other situations.