It depends of the retrace, if its a complex retrace I`ll buy at the 50% and trade it a couple of times to get that buffer. then double up on the 9 ema and green bar..but if its a clear Zig Zag retrace then buy larger at the 50% Fib and dont trade it..
Have also been looking at the 78.6% Fib there..often price will close above the Fib 2-3 days before the 9 ema catches up to make a new high..
