been doing some research of old threads and fcs website in preperation for getting a 5'11 23.5 flashie to have a bash at (pre loved) no fins ...so gosta get some....
Best all round combination i've found yet is the double foiled FCS FG7's for sides with a small trailer. Good drive on demand and still able to break free when you feel the need! Well recomended. I tend to set my trailer fin in the rear position for that little bit extra drive and is working really well. Thats in my 5'10" x 23 5/8" x 2 3/8" tri
If you want something really solid to push off the carbon S3's are also excellent but again with a smaller trailer as all 3 is way too stiff (for my liking anyway!). Big wide base for drive off the bottom and a small tip for release.
I just bought a secondhand Flashpoint 5' 10 1/2" x 24' rounded pin with subtle flyer.I have only had the board in the water a couple of times so I'm no expert on fin set ups.
I spoke to a number of people, including Bruce Hart, and his recommendation was Al Merrick/GAM with GX centre and to use a GYU centre for bigger conditions.The board has two sets of plugs for the centre fin, the plan is to use the forward position and smaller fin in smaller conditions and move the fin back and go to the bigger fin in bigger waves.
The guy I bought the board from suggested GAMs with a GS (smaller waves) and GX (larger) centre.
I ended up getting G2s with the board which seem to have similar dimensions to GAMs and a GX centre and I have now got a GYU as well.
From what I can acertain it seems to depend on a number of factors including your weight/height, the board design and the size of the waves you'll be surfing.
I just bought a 5' 10" flashpoint off Mike (thanks) and in an urge to try it out in the great surf here last weekend (still good) plonked in G5s from my Parkes quad and bought a GX fin for the centre . As typical with hasty fixes I busted a G5 fin after about 10 minutes. Predictably the swell increases overnight so I rush into the nearest shop and have to settle for something close to a G5 (code escapes me). thanks to your collective advice I think i'll head out and buy two GAMs for the rail fins.
On another subject I noted to Dorje that it is much easier to duck dive than my Parkes - (less volume). But perhaps this might have something to do with who it was shaped for (suit 70 to 80 kg) whereas according to some obviously dodgy scales at Brisbane airport i'm close to 90 kg !
Either way it gave me a bit of insight regarding volume vs ease of duck diving I am now of the opinion that for me ease of duck diving is a huge factor particulary when the surf is up a bit. I guess the trade off might be bogging down more in fuller stuff.