When I gained promotion to Tour Master. I tracked the best 50 rounds that went into my average. I then created a spreadsheet that looked like this.
9 hole score - Equivalent 18 hole score - No of Rounds - Total strokes
-4 64 18 1152
-5 62 17 1054
-6 60 9 540
-7 58 5 290
-8 56 1 56
-9 54 0 0
The number of rounds are the number of rounds I have played and achieved that score. No -9's unfortunately.
Total Strokes is simply the number of rounds x 18 hole score (18x64=1152)
As I am Tour Master, the total number of rounds in the bank equals 50, so if I simply total up the number of strokes and divide that by 50. I get my current average. 61.84.
No advantage there, because you know your current average. But I can duplicate this table, and put it theoretical numbers to see what the minimum is I need to get to 61 average and gain promotion.
As it stands. I need 15 rounds at -5 and 3 rounds at -6 to gain promotion to Legend.
Its a simple table, and it gives you clarity of what you have, and what you need, to gain promotion. Of course, you have to know what your best rounds are to enter the values.
Hope some of you find this useful. Because there is a lot of confusion as to why it takes so long to get your average down.