To the Op if he bothers to come back to read this topic...
Some of the top guys are looking at 5,000 ranked rounds played...
Lets do some maths here...
4,000 ranked rounds 9 holes roughly at 20 mins per round.
1,000 ranked rounds 18 holes roughly 40 mins per round
A few hundred hours of playing 3 - 4 - 10 - 13 holes getting bored , or not going to plan & restart the tournament.
Countless hours playing practice mode.
Then add alternate shot & MP time into it all.