I've set aside the catamaran in favour of developing the monoski, if only because I've no great wish to steer revenue toward motor manufacturers: not least because (without mentioning T-motor's name) their ease of use is missing in action.
I also consider it has more raw potential, for the outline above could be dropped from the air to glide to a location from where it may operate as a fast patrol boat; which is awesome coming at a time when I see no reasons for getting out of bed.
It is time though to turn to tubes, because these do in fact offer the flexibility of use that timber might not.
For instance most timber is lighter than water (as indeed is the uPVC ski seen here), which is not what you want beneath the waterline: constantly trying to roll the craft upon its side at rest, much like me in the morning. Tubes though can be flooded, so you've the option to use them as either ballast or buoyancy.
It therefore provides an opportunity to flood them whilst shouting commands in the style of Kurt Jurgens at the sight of a Fairey Swordfish overhead:
"Schnell, schnell! Füllen Sie die Röhrchen! Tauchen, Tauchen!!!".
As a child I installed a fish-pond and used it to sink an Airfix model of the battleship Scharnhorst with a Webley air-pistol instead of a six-inch gun (Ed. actually last week).
p.s. Inquiring 'how to order a submarine to dive in...' Google suggested 'Wigan' instead of 'German'.
