Adamus
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I don't disagree that the Turtle method can produce some large drawdowns, but it's usually a drawdown from a higher point than where you started. What I've found by testing the Turtle rules is that you typically start off losing 10 pct straightaway, whilst fishing for a trend.. ....
I always think as soon as I start to trade any strategy, I'm going to go into a drawdown, just because I optimised the system.
I reckon optimising is pretty much the same process that a fund manager goes through when advertising the return on his fund - he looks for best growth by choosing the starting and ending points carefully - i.e. just after a bad loss and just before a bad loss. My brother does it for a living. From just after the 1987 crash up to 2000, wow, great fund! And that's what my optimisation process is doing to me too. I know there are various ways to be avoid that, but it haven't got around to it yet.