Leaddude:
I, too am a recent devotee to WGT. I was 4 yards off the green in 30-40 grade rough, and it took me FIVE tries to get the ball on the green. On three of those tries, the ball DID NOT MOVE. Why not? What gives? My NINE carded on that hole, gave me a 44 for the round!
I would recommend to never use "chip" in 30-40, or any other rough. I never use it unless I'm on the fringe. In 30-40, if less than 20 yards or so, you can use "pitch", otherwise use "punch" or "full", and hit about 30 percent more than you would in the short grass for the same distance shot.
Cheers......fairways and greens!
Bob