On which fully optimized F16 boats is this standard (ie, Blade, Stealth, etc)?
Vectorworks Blade F16. European Blade F16 is still deciding what to do.
Stealths and Taipans sheet the rotation of the boom. In case of the Stealth I don't think it matter much, this is because its mast behaves differently from the superwing sections as featured on the Taipans and Blades.
Also note that my comment refers ONLY to boats that are sailed WITH a spinnaker. On boats without the spinnaker an argument can be had how the system that sheets the rotation of the boom is more attractive. It all comes down to the way a spinnaker changes the boats behaviour. Flying the spi negates certain points and thus elevates other points.
Is this implemented so one can control mast rotation from either trap (along with DH)?
On the Vectorworks Blade F16 = Yes.
I'd also be interested if there's any links you know of which describe the details of the rigging of these boats (ie, how the stock spi hoist/snuffer rigging is implemented, etc).
There aren't such link really. Just look really carefully at the pictures made of these boats. Often you can puzzle back how things work. Also it is easily enough to modify a stock setup yourself. I'm sorry that I can't be of more help here.
The builders themselfs are this first point of contact for these questions. I'm still doing all this pro-bono.
Sorry,
Wouter
