Round tail quad fish experiment- a bit too loose

A new board that wasnt cheap from a fave shaper - similar to another swallow twin keel of him that rules, this new one i wanted to try a round tail quad, but got it a little thicker and one inch


the nose rocker is flatter and the tail has a some more rocker with double concave not single like the keel.

I have surfed it a fair bit it differeng conditions from 1foot slop or shore breaks to 4-5 feet perfect beachbreak tubes. I have found it a bit loose on bottom turns (which could be a good thing for vert?)

However i dont surf that way on fishes. It feels insanely good through cutbacks and so easy to put through turns but squirrally on the 5ft day, i blew most of the good waves untill i squatted or nursed the forehand bottom turns.

Backhand for me i didnt even bother trying that day.

Would larger fins such as future controllers reduce the squirrel effect? or perhaps i just need more time to get used to the rocker. maybe i just went too thick.

Im 65kg the boards 5’11 by 20 by 2 1/2.

Thanks for any information.

Oh and the shaper ridesa similar one himself in indo and loves it in double overhead waves.

I have experienced a similar thing with a round tail keel finned egg. Compared to my old swallow tail keel fish, it is much more loose, and bottom turns aren’t as sure. I feel I have to nurse bottom turns. I think I prefer the swallow tail version. I also think the swallow tail adds much more drive compared to the round tail

are all four fins the same size , can you post a shot of them in the board , please ?


  and a [rocker / foil] profile shot ?


 would you consider getting a BACK plug put in , too ?


by the way , how tall are you too, please ? [just to get an idea of you , in relation to the board's size]


  cheers !


  ben .

My personal opinion  is that the boxes are toed in a tad too much, all turn, no drive

I agree the front fins look to toed. The trailer fins look fine. A fifth fin would help a little maybe. The outline looks more shortboard then fish like? 

Take a picture of the bottom of the board with it standing upright eg leaning against a wall and keep the camera parallel to the board otherwise its difficult to judge angles of fin boxes due to camera ‘distortion’. Or measure the toe in.

My immediate reaction is have you got your back foot right over the fins or are you riding the board a bit forward like you do with a swallow tail keel fish? Especially with the increased tail rocker you may need to get that back foot back.

Are  the Stretch quad rears double foiled? Concave or convex? Early ones were something like 50/50 (like rear thruster centre fin) but they may be different now. I would swap them out for flat on one side if convex . Have you got fins to play with? Does it feel like the fins are working together or that the rears are trying to overtake the fronts?



Oh damn hope the toe in isnt too much, damn…ill work on some shots today.

The fins im using stats-

Stretch Quad

Front Fins: Stretch Quad**

Height:** 4.39 in,     11.20 cm Base:**   4.34 in,     11.00 cm Area:**  14.52 sq in, 93.68 sq cm Rear Fins: 400 Quad Rear**

Height:** 4.00 in,    10.20 cm
Base:    3.89 in,      9.90 cm
Area:  12.41 sq in, 80.06 sq cm

** Base Depth:** 1/2 & 3/4 in.

The Stretch Quad has Stretch's unique inside foil, which compliments the fins outline very well. Great for mushy to rippable surf.


I also have scimitars which are pretty big convex(?) fins meant for small surf but might give the fronts a try the rears are pretty small pivots.


Scimitar Quad


Front Fins:** Scimitar Quad**

Height:** 4.52 in,     11.50 cm
Base:    4.37 in,     11.10 cm
Area:  15.39 sq in, 99.29 sq cm

Recommended Rears: **375 Pivot Rear**

Height:** 3.75 in,       9.50 cm **
Base:    2.82 in,       7.20 cm
Area:**    8.29 sq in, 53.48 sq cm
Base Depth: 1/2 & 3/4 in

With the SCIMITAR fronts we reccomend the PIVOT rear fin at a
height of 3.75" which is a straight up fin that has our world famous
80/20 tow foil on it.


Ialso have Future EA in fibreglass which are meant for powerful surf on shortboards. they seem larger than the stretch and are meant to never slide out. In an eggy fish thing like this

with its width, they might not have enough area. But i could mess around with scimitar fronts in the front and EA fronts in the rear…


I havent tried the  fins above except stretch supplied… but was thinking these below would improve it somewhat as they are designed for boards like this-


Ill come back with some shots thanks.


That looks like a really fun shape. Based on the photo (could be misleading) it also looks like your rear fins are too far up (close to the front fins). This makes it really loose and fast, but unstable and lacking drive on bottom turns (as you describe). What are the fin placement #s?

start by over finning to dampen looseness til you have become adjusted to the new board

think large area ,keels if you prefer the term. now after puting in ten to thirty hours water time

adjust area down to compatible loose levels.

A new board alone is an sdjustment

a new highly sensitive board is a study…


keeping big dumb fins around

are sometimes useful.

Shape is somewhat similar, size - not so much; 6-6 x 22 x 2-5/8. The fins are VectorII QF4’s w/ 375 pivot rears.
Bottom is totally different, slight vee off the thick tail which has a very hard edge up past the fins.


























I’m 6’ tall and weigh 165lbs. Normal rear foot placement is over the front fins on bottom turns
the board is put hard on the rail.
I’ve found if the rear foot is to far back it just pivots around the rail fins and slides out. But the same characteristics that were a liability become an advantage on the face when I step back… might just take some getting used to.

Ok sorry for not updating any requested photos or dimensions but only a fish eye helmet cam is available at the moment.


I also wanted to wait for some Controller fins to arrive and try out in the right conditions for this board.

Today was fun 2-3 feet long fast lefts, a bit high tide at first but getting hollower later on.Also fun bowly long rights linking up with shallow bank on the shore. The boards drive increased dramatically with the controllers.

It felt like a proper swallow tail fish highlining with awesome speed down the line. Today my mind has changed about the board, from being a small wave mini mal substitute and mainly good for cutbacks to being a possible travel companion in good waves.

Only thing is the drive and down the line speed, which went well both ways, limited the  cutback turning radius.

On a left only wave or right only wave, i feel like trying out the red stretch’s on the cutback side and controllers on the inside rail.



line a straight edge up to the fin and see how far (or not far in your case) they are toed off the nose. if toed too much, maybe re-route new holes, and set new boxes. It’ll look like crap but maybe surf better. anyhow…thats what I would do if I were in your situation. good luck

Quads allow for much custom work in fin set-ups.

Balancing them to the board is key.

The lead fins will give you pop and drive but if they are

out of balance with the trailers the tail will slide around

and the board will be difficult to control. Trailers that

have greater rake and have the center of effort more

aft will give greater directional stability. If the trailers are

too stiff and large they will tend to break loose and wash

out suddenly or not break loose at all and the board will

be difficult to turn and become doggy.

So some flexibility in the trailers can be a big help in

keeping the tail engaged and propelling the board.

Double foiled trailers tend to be smoother and come

off the top better. Single foiled trailers produce a little

more drive but tend to be sticky off the top while reducing

the tighness of your turning arc. The do swim with power

and rollercoaster well.

There are lots of approaches to quad set-ups. Experimenting

will certainly lead to something that will serve you board well.


Mahalo, Rich