I never knew about the tail wag/surrender flag but one kill today did that and one kill on my last outting a month or so did that too. Here is a pic of the 3 I popped today.
Savage M40 22 Hornet single shot. BSA 6-24x40 using factory PRVI 45gr
Kills were right to left
150yds, 200yds & 100yds
3 shots, 3 chucks that is how I rolled today.