Has anyone got experience with:
1. 5 Fin Setup ... if so what sizes
2. Twin ... in rear boxes as well as front
I know not ever recomended but always interesting to hear different experiments.
On my Casey Flow tried .... 2 plus a nubster... great on wave but not on choppy day paddling for wave.
A twin in rear fin boxes. Fun and fast and loose on a small day.
cheers

Neil when you say 2 in rear as well as front do you mean Quad ..? i also have a flow and run mine as a Quad ,

For 2+1 I just use Quobba L in front, the efficiency of the Quobba means you do not need big twins and their drag.
I cut a center Quobba to 10cm (4") to get the smaller center fin, I could not see myself using non-Quobba fins, plus the base of the Quobba is doing all their magic, and so a cut Quobba is still extremely efficient.
Just a nubster as a central fin is not enough with boards designed to be ridden as thrusters or quad, their front fins are too forward, you will kill the drive.





On using fins only in the rear boxes, for me it only worked with ultra wide tails, where I could keep my rear foot on the kickpad most of the time: a Simmons setup.

One fun experiment was an asymmetrical setup: On a standard quad setup, just remove the rear fin heel side: you get hold and drive frontside but looseness backside, great for frontside surfing.

Colas do the quobba,fins sand well as I'm always taking the tip off my rear fins as well .It's why I'm not a fan of the core fill style of fins ,you carnt change them

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justaddwater said..
Colas do the quobba,fins sand well

Yes, they are a joy to sand:
- they are made of a single homogeneous material, small fibers (glass or glass + 4% carbon) encased in a specific resin
- the resin is hard and sands easily. Very different from the nylon resin of cheap fins that melts when sanded.
- the sanded surface is smooth, I could not detect any apparent fiberglass

My advice is to fix an orbital sander on your workbench, and hold the fin by hand. It is thus very easy to see what you are doing, and by a smooth rocking motion, sand a foil with smooth curves.
Plus the orbital sander will not damage your skin in case of mistakes (the skin is supple enough to absorb the vibrations) where a rotating disc could be quite dangerous.

Colas ,As always a timely,and informative response ,always well received in oz

Actually a nubster instead of the mini centre fin on my Smik hipster worked really well in waisthigh nice Irish Atlantic Ocean waves last week. :) It made the topturn really loose and slidey. Not something I would use in general, but good fun on a small day.

Back home in our North sea mess a set of cheap Aliexpress Keel fins in the back of my Starboard Hypernut 7.10x31.5 made it on a wave feel like a magic carpet ride and the glide of a 12 footer. It looses tight turning, but I could surf over flat sections that wouldn't be possible with my normal quad set up.

In the past I really liked a nubster in the back of my Starboard Airborne as a 5th fin, it added some speed. weird that such small thing still has impact.As a wavesailor i,m used to ride with a lot of frontfoot pressure and on my Starboard pro .85x112l (i,m around 95kg) I really liked stiffer front fins like the FCS Performers and combine them with an soft plastic centrefin from K4. www.k4fins.com/ .It gives a very loose slide happy tail that is easy to whip around at will. An complete different feel as most surfers like where the back end is a cluster of grip, but for me it worked really well up to 3m serious waves. Unfortunately the northsea doesnt have often decent waves, let alone waves that offer more as a max 2 turns ride so supping in proper conditions is an holiday thing :( , otherwise I would really like, the Mink system Kai Lenny raves about seems very interesting as well. minksurf.com/

^^ +1 for twin keels in the back of a wide tailed quad board. No drag so gets into mush easily. Still drivey and gets some speed up. Gotta get foot back to turn but thats fun too!

Interesting discussion.
In small conditions i also feel that my Qutro Glide 8'6 feels a little slow. I use i with the stock thruster MFC T1 M sidefins but replaced the stock 6,5" center by a 5,5" fin.
The board has a 5 fin future box setup.
What do you think would speed up my board regarding fin setup? Smaller Center? Twin? Bigger Single?

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AlexF said..
What do you think would speed up my board regarding fin setup?

Quobbas.

Seriously.

Which Quobba set up would the forum hive mind recommend for a sup quad, like a Starboard hyper nut? It comes with 3 sets of fins standard (5.5"/ 4.7" / 3.7")

I think thr Quabas need a certain speed before they really make a difference.I really loved them in Ireland on a good day with 3-4m waves under my Smik Spitfire. Fast and heaps of grip.At home, the netherlands, in our short period windgenerated waves of the Northsea the waves have so little speed I didn't notice any difference under my Hypernut 7.10 compared with the standard SB fins.

Totally agree Jeroen, less drive than some of my other fin set ups at the bottom end and slacker waves but once up to speed they're great.

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theSeb said..
Which Quobba set up would the forum hive mind recommend for a sup quad, like a Starboard hyper nut? It comes with 3 sets of fins standard (5.5"/ 4.7" / 3.7")

Normally it would be based on your weight. E.g M for 80kg
However all M would work also, giving you more max speed but a bit less grip at low speed.
And as all quad fins, using 50/50 foil on the rear (i.e. using symmetrical central fins) will provide a smoother rail to rail but less "squirt" in turns than using side fins.
And if you like small rear fins, it is easy to cut&reshape them.

Here is my setup I had for my 100kg on my Tomo-like board, similar to the hypernut, the Gong One 6'10": L sides + M sides.



And I reshaped them and used M centers as rears to extract as speed and looseness as possible on my Gong Mob 7'6", to compensate for the added length of the board: (I could use the bigger rail length to provide the drive)

Sweet. Great advice guys. Yeah, I am around 100 kgs. Took her for the maiden voyage yesterday morning.

The good news is that I can totally handle a 133 litre board. Or, at least a 133 litre board in a hypernut shape. The bad news is that I was 1 minute too late to catch the ferry wave yesterday and I watched it come rolling through before I could paddle out. This morning I sat in the sand in the dark for 20 minutes, just before first light, and the ferry didn't come. I think it may have arrived super early, or something.

I don't check the schedule, because it makes the search that much more satisfying. Ahab didn't look up Moby Dick's schedule.