Tip to Tip for a twin fin fish?

General Discussion
1

I’m planning to shape a 5’10 x 21 x 2 5/8 twin fin, and I was wondering what would be a good tip to tip length. I really like the outline of the Channel Islands fish, so I put it into Aku Shaper to get an idea of what the nose, tail, and tip to tip measurements were. When I get everything all lined up, and the widths match up with the #'s listed on the webpage, I get a tip to tip measurements of 12 3/16 inch. Do you think that is really how wide it is? Most folks on this site say that their tip to tip measurements are between 10 and 12.

So what tip to tip do you guys use for your fish? Do you suppose a tip to tip a little over 12" would cause any problems? Thanks in advance for any insight.

2

I measured a 6 foot CI fish one time and the tip to tip was about 13"

Watch the CI fish shaping bay video on their website and Rusty’s ModFish video for a look at each end of the spectrum

5’10" at 9" works for a good friend of mine

He’ll be along to tell you what’s what in a minute here…

3

Surfer805,

I think your going to be stoked. Your numbers look fine to me. Anything less that 10 inches is a swallowtail. Having a CI template won’t make it a CI. But, fishes are not that hard to shape and are a blast in small waves. Mike

4

I think janklow was referring to me, but he was faking you out on my #'s. I do almost all

my fish tips 10’‘-11’', but I like to have a tiny bit of curve in the back half of the outline. I’m

not trying to do a big thick downrail beast like the CI fish. Those things are very different

from my idea of a fish. They don’t look anything like the Steve Lis fish I saw back in the 70’s.

The Lis boards I saw then were the thinnest surfboards I’d ever seen at that point in time,

and they certainly didn’t have boxy, edgy rails.

I like a thin, flat rockered, round railed, bladed tail, modern version that allows me to turn

at 400 mph without skittering all over the place. I want to be able to go rail-to-rail without

having to make an appointment.

Mike

5

Oh yeah. 10" So sue me.

; )

6

It will also depend largely upon your goal, cruisy or lip-hitting performance?

Your given dimensions are gravitating toward about 11 to 12 inch tail span.

My opinion is any smaller and the curvature of the aft template will lose the glide

a bit.

One exception would be if you drive your widepoint far forward, like 6

inches ahead of center. We did some like that way back when. Those

were typically very short (5’2" or even smaller, Stevie wouldn’t do anything

‘big’ like 5’6" but that’s another story) and had a very round nose template.

Curious to see what you pick. Outline photos of the template stage would

be cool.

7

mike, this sure sounds interesting. i didn’t make one but my idea of a fish would be a kind of a mix between fish and george g. design, concave and completely thinned out. would you mind to put some photos?

salu2

uzzi