I did some large statistical analysis of various strategies including a few completely random ones (certain percentage chance of opening a trade in a random direction). The random strategy had the same pattern to it as any other strategy with some winners and losers on different currencies. Its only difference was that it was never the most successful or least successful one. There is another thread on this…
Some Statistics on the Charts - Trading Discussion / Currencies - BabyPips.com Forex Trading Forum
The strategy selection could be random in disguise as you said but, unfortunately, it is the best way that I have of selecting one. I am trying to catch the “strategy of the moment” or “the one that is likely to work now”.