When you have a lot of green to work with, Amateurs would have much more success playing a Chip and Run then using a sand wedge and playing a Pitch shot. Since the Lob wedge became more popular too many rely on that club for most shots around the green. From my view that club and the technique needed creates a much larger margin of error then playing a simple Chip and Run. Experiment with different clubs (7 iron through PW) and develop the feel with each. Think of 1/3 air time and 2/3 roll time. I think you will find more success and relief around the green.