I see so many players penalise themselves strokes where they don't know the ruling. Not many players realise that if you are unsure of the ruling you can play 2 balls eg if you are unsure of the ruling on a plugged ball, you can play your original ball as it lies (plugged) and play a second ball with a free drop take note of both scores and seek an official ruling after your round.
The only format where this doesn't apply is matchplay.
The only format where this doesn't apply is matchplay.