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Tux said...A longer lower entry rocker will give you more paddle power and you can end up with the same ratio of nose lift to overall rocker as if you increase teh rocker closer to teh front...if you get my drift
What he said. As far as late drops go,the spiny is a I have set a rail way earlier and avoid pearling with the extra length because of it. My second wave on my eight footer was a barrel where I had to adjust my line in the barrel to avoid spearing into someone paddling out. That's sold me absolutely on the extra lengths positives with very few negatives. Shorter boards necessitate taking off under the lip which is what I want avoid. The eight footer went exceptionally well in the barrel up at Gnaraloo and I reckon that is a good testing ground for any board and barrel riding.
My rockers are continuous, and like Tux said, ultimately there tends to be a lot more rocker than expected when just looking at the last foot or so of nose and tail rocker. The philosophy of it is based on Al Byrne's ideas - where Oggie did his shaping apprenticeship - and, let's face it, Al Byrne could certainly shape an exceptional gun.
I'm not saying it is everything for everyone, some people like the late under lip take off, but older, heavier surfers tend not to be as good at that as 25 year old hotties. It does require an adjustment in the line up though. Sit further out, decide early and get that extra paddling speed working for you.
Since I changed my board 18 months ago I have been surfing comfortably and confidently in the biggest waves I have been comfortable and confident in in the last ten years. Things I had thought had passed me by I am now hungry and hunting for.
At the very least, ignoring all my other design comments, I highly recommended at least a six inch step up. We all know a 5'10" in the right hands can handle 20' waves, but that's not me. My favourite all time board for surfing big waves is my 6' tow board, but I will be buggered if I am attempting to paddle that into solid waves.
Foam is your friend when you are stepping up to your outer wave limit. Don't be driven by fashion and fads, but by tried and tested designs. That is one of the reasons I go to shapers with grey hair. They have done thousands and made their mistakes and experiments. No offence meant Al Bean, Mark Ogram or Tom Hoye.