Select to expand quote
SleepLessInTLV said..
So apart from width, does extra thickness contribute to actual stability in chop/waves?
Stability isn't just about width, shape/outline also has a bearing - I have 29 " and 30" wide boards that are more stable than one of my 33" inch boards due to where the volume is distributed throughout the board. In inflatables, extra thickness generally contributes to stiffness, which contributes to stability and better on-water performance. I highly recommend you look at RED* and ULI...while they are slightly heavier, they employ sturdier construction methods than most of the others (double skins, higher drop-stitch density), allowing higher pressure, greater stiffness and...better stability. You're not tall or heavy so you might enjoy a stiffer board that would let you get away with less width with some performance benefits.
(* I own a RED 12'6 race...tried almost every 12'6 inflatable available in my local market, including Naish, Hobie, Fanatic, Starboard and ULI. ULI and RED were the standouts for stiffness, stability and performance, bought the RED because it has the extra stiffness of the batten system and it has a US-compatible fin box)