Important moreso from the aerodynamic point of view and about where we'd want it centred, some 13" or 330mm aft of the forward bulkhead, depending on preferred metric. Although the craft could be foreshortened, rearward extension of booms and skis not only provides space for rear lift-motors, but also acts as a counterweight to the extension of booms and skis some four feet (1200mm) forward.
On the hydrodynamic side length of craft translates directly into sea-keeping ability. What therefore has to be done next ~ once logos are lacquered up with acrylic ~ is to pop it on the local waterway to see how it floats at rest. Prior experiments many moons ago showed it sitting nose-low: not an issue underway, but nonetheless offending my sensibilities before the off.
But come on Gromit, let's go for a curry!
