At times, when I hit the punch shot onto the green in the distance ranges of 44 - 50 yds the ball will land at the distance hit, but then rapidly backup 6 yds or more.
I use the punch shot extensively, all the way up to the 9 iron, and will tell you your CG64 will back up all by itself without any help. Top spin will overcome this and full back spin will stick the ball after a hop.
I found it useful to learn the 64 wedge punch with full back spin. It is very accurate AND consistent plus it's very easy to map. I use it all the way down to 20 yards with excellent results.
Under 20 yards the pitch shot with it is just as reliable. Full back spin will stop it at 17 yards and with no spin it rolls to 20-21. BPB4 is a great hole to learn both the punch and the pitch. Get to the back side in practice mode and see what you see. :-)
p.s., Partial spin with that wedge induces high-gear reverse every time.