To OP. this may take some time but works for me around greens in light brush.( on Merion )
8yards to pin ( flat) 30/ 40 light brush....
I take a yard off, so 7 x 3 = 2 ( ish ) = 9 yrds
x that by 2 = 18yrds double that when using a 50 wedge = 36 then add 18
S0 54 % with 50 wedge..full shot
^ re read that and 54/55 % prob equates to 25 yrds...so just treble the distance ??
A convoluted method I seem to use but hard to change the habit of a WGT lifetime :)))
Andy