a bigger fin will definatly provide better lift, there for increasing your chances of gettin on the plain earlier, but it can somtimes make you work harder to get on to the plain, and if you get a fin with a bigger surface area it will make it easier to go up wind, but it wont realy make it any better in light winds

Ok well if it would help, is it possible to get freeride fins in a US box or A box?

I'm just thinking that the small wave fin that came with the board is to small meaning i can't go up wind or plane that early. If i was able to get a 25 to 35cm freeride fin i thought that might help?

Is the US box not as strong as say a power, tuttle or trim box?

Cheers
Bubs

P.S: When you say they won't be big, about how big do you think?

Get a fin which is more upright and stiffer. You can get one a little bit longer but anything much over 30cm on a 100ltr wave board is going to pose more problems as soon as the wind increases a fraction, especially if you sail in waves.

Formula sailors will often carry two fins of 70cm one being very flexy and the other being very stiff, stiffer fins give more lift but less control. Upright fins give more lift but also less control.

Keep this in mind when selecting your new fin, dont just get the biggest thing you can fit in your board.

Using a 37cm fin with a 7m sail on a 85ltr wave board is nuts i cant see how this could help with anything? What are you doing mathew. Why dont you get a set up which will work?

bubs MFC make freeride fins in US base, i agree with the others that anything more than 30cm may be too much for the fin box.

your other option would be a freestyle type fin. although not as deep they have a bigger surface area and a more upright leading edge.

ultimately what you are not happy with is the result of sailing a wave board on flat water. wave boards on flat water can be boring. they are slow, don't plane early, can't go upwind as well as a freeride or slalom board and tend to be skatey (ie. they don't track as well as slalom gear).

it could also be technique too... some of the wave guys may be able to give more help but some wave boards require more front foot pressure to go upwind and get them planing early.

also give the guys at windshack a call and talk to them, they will be able to offer you excellent advice and put you in touch with local retailers that sell mfc fins. i have spoken with them before regards fins. they were very helpfull and friendly.

if you were in the surf i am sure that all of these things would become positives as what you describe is what most wave boards are like.

I'm sure it will improve the upwind performance and early planning.
The question is how much, will it be worth the effort?
Can you borrow one to find out?
So what size wave fin is there now?
And how flexi is it.
Some wave fins are not only small but very flexi, so a bigger and stiffer fin will make a lot of difference.

Were you down there at all in the past two weeks. If so, it was usually my brother, dad and i, in a loaded up, duel cab, white ford ute. Were the ones who had a old Tiga 285 blow off our roof racks unfortunatly.

Is there going to be any wind much in the next week or so? Are all your fins US box?

bubs