It is clean but being optimised for two up isn't such a bad thing when it comes to sail solo because everything is at the front of tramp so you don't tie yourself up in knots when you're tacking and gybing. Notice the mast rotation with the slack tied around the boom. I get the impression they don't bother with it too much. Try and dig out an 'A' Cat photo and see how they have set up their downhaul and rotation. Also try and have a look at how the Capricorn has set up a two to one spi halyard with seperate tack line, it could make for very quick hoists as you can pull the foot of the spi out prior to the windward mark from the trapezze.