Since becoming Legend a few days ago, I've noticed that flop shots in greenside bunkers work sometimes and not others. I've had 10yds to pin with 30-40% lie and hit LW flop at about 16yds strength and the ball ended up way short and in rough. And if a full LW is used at appropriate strength, you just can't stop the ball close at all, and it rolls way past pin. Any general rules of thumb for this. Any ideas would be helpful. Thank you.