Most of the time i use back spin every shot, you know where you stand like that distance wise, i find when you dont use b'spin ball with say 190 yard iron might travell between 200 yards or 192. With backspin they are constant (but with burners anyway,)my long irons can stop like a wedge.
Here's a rough guide for using backspin, with G'10's. Adjust wind from these yardages.
Club: Distance with backspin & without (callaways (z))
64 Zatin 50 47 52
75 yard wedge 72 78
105 102 108
115 PW 112 (b.s) 118/119
130 9i 126/127 135
145 8i 142 150
160 7i 157 168
175 6i 172 184
190 5i 187 200/202
200 4i 197 212/214
215 3i 214 230
To top it all off, here's a rough guide for wind: But these are with higher loft Burners.
wedges between 50/60 yards add 2/3 yards per 10 m.p.h tailwind, 4/5 yards H'dwind
wedges up to 115, add 5 yards per 10 mph
between 120 & 145, add 6 yards per 10 mph
between 145 & 170 add 7 yards per 10 mph
between 170 & 190 add 8 yards per 10 mph
between 190 & 200+ add 10 yards per 10 mph
And when you punch a shot, wind will effect the shot by half, so 87 yard punched wedge (105 full swing) will travel 5 yards in 20 mph wind ,not 10 yards like a full swing would
Hope its been useful, REMEMBER this may work 7/10 times, but as i mentioned, its either deviation,bad game physics, inconsistancies with wind or callaways not adding the extra yardage the times it doesn't work, as you'd like to think your 175 yard iron would be 184 without spin, but sometimes when you need it to be 184 it ends up 176.