What kind of strategies worked in 03-04?

Many things I test seem to work well in other years but not so well in these two years. Is it my testing or were those two years unusual?

 

back then buyin' siri gaps up and sellin' gaps down would have made u a fortune.

 

hello - 2003 - like 30+% rallies. if your ideas can't make profit when the markets move up almost 30%, go back to the drawing board. <unless you're shorting ^_^ >