Hold left (I think) flipper during plunge, ball go to magnet. Loop = Secret Skill Shot (1M+), drop = Super Secret Skill Shot (1.25M+).
Plunging the ball softly will allow you to make a Super Skill Shot at the strobing drop target shot.
Extra ball is worth 10 million!
Hound Dog is a valuable frenzy mode that can score a lot if you start a Multiball during it.