Surfing Waves

I'm sure this has been touched on many times, but I couldn't find the specific info I was looking for.

I have a classic single fin longboard. I am wondering where the best place to position the fin is.

I mostly surf pitchy beach breaks in the knee to chest range, possibly some should-high days. I don't necessary want to try to carve around like a shortboarder, but I want the board to turn smoothly and set nice trim.

Any tips on fin positioning would be great. I know the standard answer is forward for better turning and back for better drive/noseriding. Just looking for a little more feedback based on the size/type of waves I surf.

put it in the middle the first time you go out, and then adjust how you need it.

i tried to make note of where my backfoot was landing on popup and moved the fin so that it was pivoting underneath this position...its made a huge differance