Max sail size for 76 Fish

[Greenroom]

Just wondering what would be the max sail to put on the 76 fish and what size fin to use??
I also have the 86 but its out of action due to repairs:(
With the 86 I use a 5.7 but noticing the 76 and 86 have the same specs (width, tail, fin size) apart from the length which differs.
Would this mean I could use a 5.7 on the 76 but have the mast forward in the track?
Would this work or am I trying to overload the board too much?
Any advise would be coolB)

[Greenroom]

Does anybody have any ideas on sail loading between the 76 and 86?:)

[Dolf]

Hi Greenroom,

The largest sail that I could put on my fish 76 was a 5.4 and on my Fish 90 was a 6.9 (but that was really pushing it). In both cases I threw away the thrusters and for the 6.0 used a 28 cm tru ames custom wave fin for my 83 kg and a 23 drake for my 63 kg wife. For the 5.4 I used a 24 and my wife a 19.

I hope this is of some reference for you. If you want my background info and formula for this send me an e-mail.