What is the benefit of tail rocker on surf sup's.

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Toddsup
Toddsup
17 posts
17 posts
13 Jun 2014 1:51am
I was looking at Joe Blair sup designs and his board models lacked tail rocker. He says it is faster and with his wide pintail designs, they surf awesome. My current board (slingshot Rant 9') has lots of tail rocker. I know I can't keep up with my partner on his Naish Mana 8'10" but I thought it was because he is 50pounds lighter.
colas
colas
5392 posts
5392 posts
13 Jun 2014 3:27am
Like with surfboards, more tail rocker allows to turn tighter in the pocket and not overrun the wave. Makes the modern shortboard surfing easier. They are slower but allow to keep close to the power... Or a way to make noseriders keep in the curl.

Faster tail rocker are great for more speed be able to get away from the curl, for large swooping curves, wide cutbacks, even on slow waves. But you need more technique (and a powerful rear leg) to control them at speed.

There is no "better" design. Different compromises for different goals & conditions.
Toddsup
Toddsup
17 posts
17 posts
13 Jun 2014 3:47am
Makes sense. Thank you
boardbumps
boardbumps
NSW
698 posts
NSW, 698 posts
13 Jun 2014 9:48am
What Colas says is mainly true, especially for short boards, late tail rocker in the last 1foot of a SUP board does not really slow the board down too much unlike a short board or any of a SUP boards narrow cousins.

Narrow being the main design element difference between short boards and SUP.

Because of a SUP boards extra width overall and especially at the tail, you find that the board pops up onto plane very quickly and stays on plane for longer.

The easiest way to control this plane speed is to put extra late tail lift close to the pod.
Especially for the longer SUP boards over about 8'8.
rockmagnet
rockmagnet
QLD
1458 posts
QLD, 1458 posts
13 Jun 2014 5:42pm
Tail rocker also helps when paddling onto a wave. If the tail is too straight or flat it will get buried in the wave whereas a good rocker will drive the board onto the wave.
Sailhack
Sailhack
VIC
5000 posts
VIC, 5000 posts
13 Jun 2014 6:56pm
Or...from the information that I've gathered - a reduction in tail rocker, combined with a flexy tail to allow an increased rocker when pressure is applied should tick both boxes.

Is that assumption correct boardbumps?
cel23
cel23
QLD
175 posts
QLD, 175 posts
13 Jun 2014 9:46pm
rockmagnet said...
Tail rocker also helps when paddling onto a wave. If the tail is too straight or flat it will get buried in the wave whereas a good rocker will drive the board onto the wave.


A lower rocker line carries more glide sped and less yaw, therefore allowing you get onto waves easier
rockmagnet
rockmagnet
QLD
1458 posts
QLD, 1458 posts
13 Jun 2014 10:39pm
cel23 said...


rockmagnet said...
Tail rocker also helps when paddling onto a wave. If the tail is too straight or flat it will get buried in the wave whereas a good rocker will drive the board onto the wave.




A lower rocker line carries more glide sped and less yaw, therefore allowing you get onto waves easier



Sorry but my experience has the wave getting under the rocker and pushing you onto the wave. I had a board that you could put a straight edge on the tail and it just got buried and fell off the back of the wave.Tail rocker really does give you drive onto the wave. I think your glide speed would be lost on a wave that is travelling much faster then you are paddling. But hey I'm no scientist.
boardbumps
boardbumps
NSW
698 posts
NSW, 698 posts
13 Jun 2014 11:02pm
There is a small secret about catching waves,
if your not in the right spot to catch a wave your not going to catch that wave.

It does not matter whether you have less tail rocker or a large paddle.
You have to be in the right spot to catch a wave
rockmagnet
rockmagnet
QLD
1458 posts
QLD, 1458 posts
13 Jun 2014 11:09pm
boardbumps said...
There is a small secret about catching waves,
if your not in the right spot to catch a wave your not going to catch that wave.

It does not matter whether you have less tail rocker or a large paddle.
You have to be in the right spot to catch a wave




No! Really.?
John4F
John4F
116 posts
116 posts
14 Jun 2014 3:03am
Much depends on the type of wave. Ocean waves or North Sea waves have quite a different power, wave face, buildup and period between waves (3-5 seconds is normal).
Most of the boards from ocean shapers (most big 'A' brands) have too much rocker for North Sea waves. A flatter rocker for the same board length (8 to 10 feet) will give more chance to catch a wave on North Sea.
This results in the problem that people who have paid themselves the most expensive boards ('A' brands) catch less waves on North Sea than people with cheaper boards. And they don't understand as they are blinded by the marketing of the big 'A' brands (whose shapers have probably never seen the North Sea)

For short SUP: listen to Colas as he is most experienced. My short SUP (7'4") had little rocker too.
Jeroensurf
Jeroensurf
1133 posts
1133 posts
14 Jun 2014 3:53am
+1 for John (being unfortunately a Northsea supper mostly myself :( )
supthecreek
supthecreek
2776 posts
2776 posts
14 Jun 2014 12:15pm
Ya know, for as long as I have been surfing, I have never spent a lot of time analyzing every aspect of a shape....

but there is one thing that I have been particularly aware of on SUP's...

A nice rolled up tail rocker makes a board very easy to turn on a slow, soft shoulder. Just the kind of wave that we tend to surf a lot.

Without a lot of power, you can just "swoop" back and forth in the hook, and generate speed for a bigger move when the wave jacks a bit more.

My 9'5 Mana is a perfect example... I can just stand back and carve tight small turns on an otherwise boring section of a wave.... or use the rocker to carve a good solid turn on a steep wave.

I look for a nice "rolled up" tail rocker in all my boards now.
colas
colas
5392 posts
5392 posts
19 Jun 2014 4:45am


An example of 2 similar shapes with different rockers: the 8'8" Gong Eternity left, a speed machine, and the 8'11" Gong Cutter right, a control freak. The flatter rocker was exhilarating by its speed and long carving gouges, but the rockered board was the one I brought for my Hossegor trip in case of big (for me: double overhead max) conditions for safety, especially in chop: hitting chop on a face full speed with a flatter rocker can be challenging. More pics at www.gong-galaxy.com/forum/viewtopic.php?f=5&t=4048&p=61343


Flatter rockers, and volume in tails help a lot taking off in weak waves.
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