Hard to say what would be best for you. Like described, the Acids are super precise and predictable and on longer waves when you have the time to set the top turn up just right nothing beats that smoothness. The top turns of the Quads may not be as smooth, but I figure they are very forgiving and open to different styles. You can be later and still get the fins to grip. You can go in with more power and still not bounce out. Specifically when you put everything you've got onto a powerful top turn but then as a consequence maybe misses the setup a bit the Quad will save your butt and still pull you through. SImilarly if you get a bit late and hit some white water when you thought you were gonna do a clean carve.
Another thing that is different is that the Quads have this special way of accelerating in the bottom turn. Great for going around sections. And you can also hold on to the drive in the bottom turn longer and go more vert with the drive still on. This is not the same kind of vert you would normally go with a twin fin where you more use the ultra loose feel to steer the board vert without much power input. On the Quads you tend to rather keep the power on and really carve up vert. And then you can then combine this with he top turn characteristics where you can go further up the face before you set the top turn without risking blowing out the back.
Another really exciting things in the top turn is the ability to pulll a much longer "round house style" top turn and still come out with speed. With a twin you can do full turns too, but you tend to end up high up on the wave with not much speed going out of the turn. Not necessarily bad, but something different. On single fins you can go in with lots of speed and pull lots of G:s, but unless your precision if perfect it is easy to loose the power somewhere in the middle. With the Quads, you have this feel that they keep accelerating in the turn. Then can take a huge amount of power in the entry. They are easy to pull out of the turn (like a twin). But they also provide acceleration out of the turn like no other board, I've tried.
I would say that generally, you have to be a bit more "on it" on the Quads compared to twin fin boards which tend to go where you want with hardly any body input. The Quads prefer some more drive from the sailor and also give more acceleration back so you need to be prepared. I recently tried the 13cm front fins for the Starboard Quads, and that softened the board up a bit. Surely an option if you feel you want a slightly less powerful feel.
Below is a video from some powered up 3.5 sailing. You won't see so much of the boards potential, but if you look closely you might see a bit of how the board makes it easy to pull those fuller turns.
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Acker said...Reflex Films said...
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The Acid top turn gets exponentially nicer as the wave verts up. So Acid style has you hunting down the last minute of the wave before it pitches. The quad is looser in the top turn on a less vertical section...
Pretty key point this. I think the single fin top turn looks a lot more stylish but so long as it is timed perfectly, smacking the vert section at the last minute before the wave pitches, with a snappy appearance, a shot of spray and a bit of tail slide. JP gets this so consistently and it's also why Pritchard's turns looked so good on the Kode80 at Cabo Verde. Problem is, takes a lot of timing and skill to get this perfect hit and if early or late can quickly look lame. I guess this is where the quad provides a bit more leeway by still allowing impressive spray-throwing turns either before the wave verts up or after in white water.
Given this, and you're testing, I'm interested in which do think would be preferable, the quad or kode? I'm toying between the two. I'm 75kg with a kode86 for freestyle/freeride but considering 80 or 74 for wavesailing but possibly 76quad. I generally love the driven rail to rail feeling of the kode.