> But, as
> initial ROR goes up, the difference between
> the correct new answer and double the
> original answer is not quite as dramatic as
> "almost double." So, for 10% ROR,
> the new answer might be something like 18%.

With a little simple algebra, it occurs to me that if x is the original ROR, in decimal form, and we're looking for the formula to express total ROR if we plan to siphon all profits, should we double, then the new ROR is just: 2x/1+x.

I'd like to make another suggestion, if I may. When I was trading, I often wondered if I should stay with a position, or take it off. My colleague used to remind me that the decision didn't have to be "all or nothing." He used to advise me to take off half of the position. That way, I could never be 100% right or 100% wrong; it was a simple compromise.

The analogy here is that, if siphoning off ALL profits at the doubling point increases your initial ROR to unacceptably high levels, the alternative to waiting until you triple or quadruple a bank, to take any profits, is to take only half of your profits, once you double, rather than take all of them. You get to spend some money, and your initial ROR isn't increased as dramatically. A nice compromise.

Don