by rich r » Mon Feb 26, 2007 6:54 pm
Some boards are designed for specific conditions, but you can typically surf most waves 2 foot to 15 foot (face) with any generally standard board (shortboard (including fish and hybrids), funshapes (including 'minimal' and 'big guy shortboard'), egg, or longboard).
Guns are for big, big waves, or major ledges like T'hupoo (though they don't use guns at T'hupoo, but boards made specifically for the short steep fastness of it - so I should revise my statement).
Guns are for big, big waves (25 + faces). They are designed to enable speed, before tow-in surfing made it possible to get up to speed on waves too big to paddle fast enough to catch.
I've taken 15 foot faces on a longboard. What happens? You get a really good ride.
The big issue comes not in size of the wave but shape and design. It could be really steep, meaning you're going to want something with a bit of rocker to it. It could be fat and thick - if it's slow moving, you might want some volume to help pick it up, if it's fast, you'll want something that can get you up and going (meaning you're looking at tail style and fin setups more).
Wind conditions might affect you too. Stiff offshores might rule out a longboard if you can't get down the face before the wind picks you up. Onshores might make it too mushy to get a good ride with a shortboard.
there's no one answer. But, I've been riding an 8-6 in most everything for the past 2 years. Haven't pulled out the 6-6 or 6-4 in all that time.