Showing a good track record is just part of it. The more important aspect is showing that your results have a reasonable chance of sustaining themselves into the future. There's so many people out there right now with "systems" that are making great returns, but the vast majority of them are highly correlated to the S&P 500. When stocks finally stop going up, guess what happens to those returns?
So yes a track record is step one, and a 5 year is long enough. But you'd also have to demonstrate that it wasn't just a good 5 year streak because of a bull market like we've seen since 2009.
If you can show a 5 year track record with good performance and a correlation to the S&P 500 of less than 25%, or even negative, that would be something. If you can only show good returns when stocks are also going up, then it's not worth much of anything.
So yes a track record is step one, and a 5 year is long enough. But you'd also have to demonstrate that it wasn't just a good 5 year streak because of a bull market like we've seen since 2009.
If you can show a 5 year track record with good performance and a correlation to the S&P 500 of less than 25%, or even negative, that would be something. If you can only show good returns when stocks are also going up, then it's not worth much of anything.