I have observed almost all decent golfers being able to slightly brush (or scrape) the ground during a practice swing on the range or on the course. I am not able to do that consistently. I have tried all kinds of the following things:
1) Keep my head still
2) Not raise my body
3) Take a shorter swing
4) Come down with my body on the downswing and not with my arms
Inspite of that I scrape the ground only sometimes during the practice swing (2 or 3 times out of 10). On the course when I am playing with others, I take my 1st practice swing and I fail to scrape the ground. I take my 2nd and many times still repeat the same thing. Since I cannot keep others waiting, I decide to go ahead and hit the ball anyways, thinking I will correct it during the actual shot. As all of you must have guessed by now, I end up topping the ball or slicing it.
So my question is, how do I consistently scrape or brush the ground during practice swings ? What am I doing or not doing which makes my club not touch the ground during the practice swing ?
Secondly, when I am playing on the course and I do not brush the ground during my 1st practice swing, should I keep on trying till I brush the ground and then and only then hit my shot ? Because like I mentioned above most of the times if I hit the shot anyways, it does not go well.