I try to encourage all the pros that I play with to take their time getting to master and not try to buy the master ranking with anything more than a Rapture driver.
It goes back to how the WGT calculates the handicaps or scoring average. A decent pro can play the front nine at St Andrews and the back nine at Kiawah and get their average down to 65 pretty quickly. If that same pro played the other six nines that he or she has available it would be much more difficult.
I would suggest that the WGT use 30 rounds to calculate your handicap rather than the 12 rounds. Since nine hole rounds count the same as 18 this means that 30 nine hole rounds could be used and give you a better sense of your true average.