here is my setup for on S&P500
my expectation is the end of the long up move gonna be from the area A or B
in chart all my SL for both area
make sure to trade with SL
the down move gonna be fast and maybe you will not able to enter the trade
the best way to trade it to wait until you see the first move then you try to have entry on 5060% of reverse wave i think this the best to have nice position
good luck