Had a bit of search around and couldn't find anything so thought you guys could help. Sorry if its been posted before.
I'm 78kgs and tossing up between Medium or Large AM fins. Keen to use it for good waves, 4-6ft+. Just to mess with me FCS mediums go up to 80kgs, and FCS largies start at 75kg and go up... On my smaller wave board i've got medium Futures AM1's, and they are perfect - but range is up to 88kgs so not really a comparison.
What are the board dims you're putting 'em on?
If the tail is wide, I'd go the large. If it's a pinny tail, probably medium.
I am close to that weight and use mediums on all my boards from 6'0" to 6'8" with no problems.
Thanks for the comments. Board is the Stacey Zombie wolf. http://www.staceysurf.com/zombie-wolf
Dims are 6'0" x 19 1/2" x 2 1/2".. 31.3 litres. Currently I've got Accelerators on it in the Large size and they feel ok, but wonder if they have a bit too much hold sometimes.