As I see it if Waynes Bitza was to be measured by an approved measurer then the overall length of the hull would be just that. The gantries are not a part of the main hull and are just a pivoting mechanisms for the rudders. Otherwise, if this is not the case then every F16 I know of wouldn't measure as the more usual gudgeon, pintles brought off the shelf and protrude 35-40mm ( 1.32-1.5") behind the transom. Add this to hulls which are already 4995-5005mm long and we are all in the s**t
If anybody has a different view then you'll have to be able to explain to me in detail at what stage does a normal gudgeon become a gantry, is gantry the right term? you could call them extended gudgeons or gudgeons on viagra