It is easy to buid a HWS, getting it to resemble a surfboard from afar, to an untrained eye. It might even surf surprisingly well considering the heft and inaccuracies of shape, but most are for wall hanging and the Ooohs and Ahhs of those who do not surf and cannot see the warbles in the countour or lack of rocker.
However building a HWS with a nice smooth rocker, outline and foil, without twisting, and accurate bottom contours, keeping it light as possible, yet strong, is a serious challenge. One fears the trained eye’s opinion.
When nearing completion I will start a build thread on my current and what will likely be my final HWS. I have been having to walk away from it as sometimes I find no joy in working on it, but so far I am happy with the results. Except for the weight. I tend to overbuild considering a well placed knee hitting the center of a compartment. I am unsure how much weight it will lose when shaping the rails which are still square. I have got most of the Chassis built, need to adhere the deck then shape rails and hull, then glass and insert 5 proboxes.
As for venting, my board is getting 2 airvents, One thumbscrew vent in nose, one minimized brass vent in tail to be opened only when water inevitably gets inside and cross flow ventilation is the call. This HWS will be strong enough that there is little fear of a closed vent and a cold board placed in the sun, but I will still avoid such a situation.
Preventing interior wood from absorbing moisture is another consideration with my current build.
All previous builds I have wiped the interior wood once with epoxy before laying down the deck panel(s), but it takes more than this to seal it from ponded water, especially exposed endgrain, and one can easily add a lot of weight to it sealing the interior.
Interior sealing leads to secondary bonding concerns and the prevention of possible secondary bonding failure greatly increases prepwork at each subsequent stage.
Right now I have been fighting a work table which itself is twisting and bending, an Unlevel concrete slab and a workshop(dilapidated shed) which flooded 6 inches deep in the one corner in the last storm. Luckily I had most of the important stuff well off the floor.