I see what you mean(slingshot?), the nq didn't retrace at all, i took a little piece of that down move..grrr
Yea, I noticed the people on the Ensign web site call them slingshots. I've always called them retracements or pullbacks.
I got several trades on SPY today. Using SMA crosses which is my usual strategy. I love trending days. Or flat days or any old day that happens to come my way.