Quote from runningman:
Many of the systems people post here seem very complicated, with filters, indicators, etc. My question is - can a simple system of, say a 5/50 MA crossover, buy when the 5 crosses the 50 going up, sell when the 5 crosses the 50 going down, on a 5 min chart- work? Is money management the key?
You need to ask yourself, "What is the larger trend?" Going long with the above, if the larger trend in the stock AND the market is down, you are going to be in trouble. This would likely be more of a shorting opportunity. This is why any MA system on its own is headed for failure without incorporating other considerations.