Not sure I agree with Bommerboy44 on that. I switched from the R11 irons to the Vapor irons a few months ago and saw big improvements in my iron play.
The distance on each iron was the same but the precision is much better. I can actually tell I'm hitting them much closer to the pin and I'm sure it isn't because my ability has gotten better. My putting has been poor since switching but my scoring has been better a tribute to better iron play for sure.
Grinding away when you get to about level 95 is not fun. It takes forever to get from one level to the next. I don't think there are any real secrets. Make sure you get you daily bonus maxed, even a 9 hole CTTH will give you your 880 points. Stroke play in tournaments seems to be the fastest way to get points, playing alone is much faster and the point award is pretty good. Of course the boost is a key as well.
All that being said it just takes a long time.when you have to earn 500k points to advance, even if you hit 2k a day that is still almost 9 months.