+2oz/sq yd X 2 yds (length of board) X .66 (amount of sq yd reduced by width of board) = 2.64 oz. (weight of additional cloth) X 1.5 (approximate additional weight of resin to saturate heavier cloth) = 3.96.
So, additional cloth weight + resin weight = roughly 6.6 oz.
I don't think there is an appreciable difference in weight for cloth or resin when using 'S' or 'E' cloth. Those figures roughly estimate the extra weight of the 2 oz difference in cloth weight for the one deck layer + additional resin required to saturate it.
1/2 lb board weight might very well be detectable ride wise. Likely most apparent on take offs and sudden direction changes where 'swing weight' comes in to play.
Very True - the board in question will be a fish(ish) 5’10", I’m a heavy footed 185 pounds. I’m using the 6 ounce in an attempt to extend the life of this board a bit; all of my shortboards have enormous heel dents and most have delams in the same spot.
I don’t really think on swing weight that much until I step onboard my guns or longboards, but what you say makes sense.