Note from CreeDo: I am missing the images from this so it might be hard to understand.
Sorry!
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Hi, I will try to explain to you my method for fullpower backshot.
My formulas aren't sure so don't blame me if u miss ^.^

-The fullpower backshot works with a wind below 14. Respect that rule or you might get a beautiful hook that would tk if you are lucky :p

-You can't use fullpower on this wind, so use 3 bar.

-Same with wind up . ( always 3 bar )

-the lowest angle you can use is with a wind up 26 the angle is 46 full

Some cases where the shot lands just behind you :

For the hOrizOntal wind pick angle 61
formula = 61 - (wind /2)

so 61 - (19 /2) = 51 full

wind 2 : 61 3 bar
wind 8 : 57 3 bar
wind 14 : 54 full
wind 18 : 52 full
wind 25 : 48 full

wind up ,
For this wind , you can't hit with fullpower if the ennemy is just behind you.
fOrmula : 61 - (wind /2) - (wind /7)

so 61 / (22 /2) / (22/7) = 47 full

wind 2 : 60 3 bar
wind 8 : 55 3 bar
wind 14 : 52 full
wind 18 : 49 full
wind 26 : 46 full

-for this wind,

Formula : 61 - (wind /2) + (wind /4 )

so 61 - (21 /2 ) + (21 /4) = 55 full

wind 2 : 61 3 bar
wind 8 : 59 3 bar
wind 14 : 57 3 bar
wind 21 : 55 full

-you can fullpower backshot with an angle below 54.

- for this wind use a highest angle such as 63 or 64 and 3 bar. fullpower might hoOk

Now you are a pro you can make hard shots like this

FULLSCREEN HOOK

- hOrizOntal wind :

fullscreen fOrmula : 58 - ( wind/2)
example : if the wind is 14
the fullscreen will be 51 full

wind 2 : 58 full
wind 8 : 54 full
wind 14 : 51 full
wind 24 : 43 full

- wind down :
wind 3 : 58 full
wind 9 : 54 full
wind 18 : 50 full
wind 24 : 45 full

- wind up
wind 10 : 61 full
wind 17 : 63 full
wind 24 : 65 full

okay ,now you need to practice it ;o