pitch, flop & punch won't work on the green, only full shot and then roughly hit twice as far as the ball is away from you. EG ball 20 yards to hole hit 40. This is a very rough estimation depending on your gears. You will have to fine tune this to suit conditions and lie.
Hope this was helpful, and to the disbelievers, YES this is a legal shot according to the rules of golf, both in real life & in-game' Cheers