I see what Centaurus is getting at, 600 hours is a fair bit of IF time, but if that what they want ,thats what they want.
I've logged around 300 actual IFR hours out of 9 odd thousand hours (3.3%) with 14 renewals, compared to planned IFR flight time of around 6500 hours.
I, however, admit that I am pretty fortunate in where I fly, at the right time of the year I could go many weeks where I have never see a whiff of cloud and on others find levels on top or in between layers.
Anyway I tip my hat to the RFDS guys, their gig is way harder than mine....... and I don't mind keeping it that way either.
