the spinner
I am a pro, and hit this shot a lot. I'm amazed how excited amateurs get to see the ball spin! Brian suggests a method I don't even give thought to but as usual, he's right on. If the greens are not rock hard (which is either serious tourney conditions on Ponky Muni) anybody with BM's impact conditons, the right ball and a wedge with decent grooves can do it.
Like he says, it's not a "punchy forward leaning impact," although this does spin the ball a lot but the trajectory diminishes the stopping power.
The "feel" that may help you is more of a rounded, "connected" arms to body motion that occurs briskly. There is still no leakage, but the PP3 stays behind or under the shaft beyond impact.
Put a towel under left arm/chest to monitor PP4 and rotate onto your left heel. Add some speed, DON'T leak and you'll be zipping them in there from 40 - 80 yards in no time.