Reading this topic something immediately came up to my mind.
One landing from a 4 hour flight on a Piper Cherokee, heavy rain shower just 15 before landing, even the low-level CB's were still there when we were on finals. Tried to plant it (turned out to be no so "planted"), and right away, after nose gear touchdown the tail starts to swerve(?) erratically left to right (like the racing motorcycle's tail when the bloke is about to be thrown to the floor). Immediate reaction, elevator nose down, don't touch the brakes and let the airplane decelerate by friction. The "scare" came up just after the turn-off.
I guess it happens to the little ones as the big ones also...who would've thought?
