I landed after the sequence and gave a silent thanks to the good burghers of Pprune for mentioning FISHTAILING recently. It certainly saved me some embarrasment!
Never heard of the word fishtailing before in this context. I guess you mean yawing the aircraft left to right and back? I can imagine that works well, since the prop is now blown on sideways, with more pressure to push it through its first compression.
One word of caution - this manoeuvre creates immense sideways forces on the tail and torque on the aft fuselage. Va is defined as the speed where the wings stall before the load on them becomes excessive, but flying below Va does NOT automatically extend the same protection to the rudder. In fact, aerobatic aircraft have a specific speed limit, usually well below Va, for manoeuvres such as flick rolls which exert the same force on the rudder.
I don't know what sort of airplane Stik flies, but from his experience I guess it's a very capable aerobatics plane which doesn't get bent by a fishtail at 150 mph. But if you do the same thing in the average spamcan, you might lose the whole tail section instantly. Not good.