Not too sure on size. I guess 32-36. Hopefully the fin will be reasonably quick, if thats possible with a weed ?
They're moderately quick, we've had a few 40's on weedies in WA and lots of high 30's.
Of the shelf fin's in WA
JP freeride weed 31 & 36 (I can vouch for these)
Maui Fin Co
Choco
These are the main offenders other than that there are a few hacksaw happy crew around who love modifying slalom fins
heyif your still looking ive got a 30cm select weed eliminator.. pm me for more info and i can send you some photo's
hey elmo why do you think MFC recommend the 39 cm weedy for 6.5-7.5cm sails? i would have thought that would be more like the equivalent of the 44cm pointer and for sails up to 8.3m? the choco 33 is supposed to be suitable for 6.5-7.5 sails.. what the?!? which brand is the black and green ones to be avoided?
Don't know the exact reason why MFC recommend the 39cm possibly something to do with the reduced lift from a weedy
please note
my theories may vary considerably from reality, if anyone has the correct reason please post it
Well my theory is that there are 2 types of weedies.
1 where a mass produced foil is boxed at different angles, this will produce a smaller thickness to flow ratio the greater the angle off vertical.
2 where the fin is designed to have the optimum thickness to flow angle regardless of rake, so these fins are a different foil for every rake angle.
At 45 deg this can mean a 40% difference in thickness to flow ratio between the 2 types.
The first type will be less powerful than the second, so will need to be bigger for the same sail size.
That's why the guys here reboxing pointers into weedies are choosing the thickest fins they can find.
