Dennis can provide more info, but I believe the bomb pop like the signat., are sub 1.5" at their thickest points on average. I would assume there is some thickness differences depending on board length.
The bp or sig will be quite different than the comp 1 you are riding; and they are generally not designed to be ridden as a standard quad. The bp has a wider tail than the signature and this helps with transitional speed and some of the pearling issues some riders have reported for the signature and the flyboy.
vents are used in polystyrene foams (both expanded and extruded), because these foams have an significant amount of air incorporated into the structure. The general rule of thumb is if the foam is below 2lbs pcf, then a vent is a good idea for average sized board. You will often see multiple vents in paddle board because they are so large. Vents, especially passive vents, allow a board to equalize better under extremes, which can theoretically result in a longer board life. There are even some boards (surfboards, no one is using this tech in wake surfs yet; we have played with it some) that are designed to be pumped up with air to a desired flex/stiffness. Think of the Nike air pump.....
Most every custom board manufacture offers vents.
The comp 1.0 is a little less than 2.0" thick at its thickest point. And as far as the Chaos pro goes it is sub 2" thick.
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