here is a strange on for you. I am trying to come up with some new methods to trade ETFs. What i have figured out is that based on different volatility profiles, different ETFs trend in different ways......we knew this. my system is to use a triple moving averge crossover signal. here is that catch, i have figured out with back testing that differerent ETF.s will be profitable (or un profitable) by using signals that are generate by different Moving averages. for example...on OIH, i may use a 10, 15, 30 day moving average crossover signal but, on QQQQ, a shorter moving average is profitable while a longer one is unprofitable. has anyone else done this? or even heard of this? I think most people (like the turtles) use just one system for every security, but i am using slightly different systems depending on the volatility of the security.