-This strategy uses simple indicators to determine an entry which indicate trend reversal-- such as and the fact that the 2008 credit crisis crash was likely to fall to previous resistance (dot com crash)
-Safe strategy, you're essentially betting on the American Economy and when you're at rock bottom it's more likely to go up than a full economic collapse in western society.
-This is ofcourse hypothetical but when the next crash hits, this is a good guide to follow.
-Could be diversified with FTSE100 and other economically prosperous nations' indexes.
S&P500 Historical returns calculator was used in the process of this chart, these can be found on google .