I have seen people do a construction like you say on a small tri (be it with the line to an ama - you would then do it to the WW hull and potentially stack 2 3 colour lights. Given that there is a contradiction between tight, bending and proper alignment thin chance of success is low.

Fixing the mast would be a huge advantage - you could then stack 2 3-color lights and flip a switch. 2 ways I can imagine this:

1) the sail is tied to the mast with thin lines and beads (for friction reduction during hoisting) like it has been done for years on old sailing barges etc (which also had a 'square top' proxy for years). Not sure how bad the extra turbulence is - I remember people experimenting with small vortex generators on the masts anyway...

2) could the sail be attached to a rail on the LW side of the mast  - I am no aerodynamics expert but does not seem to be a very bad position - it would mean:

- adjusting outhaul as the position of the boom changes to maintain right rofile

- the battens would probably not run all the way to the mast but stop 1/2 - 1 circumference (of the mast)  short of the mast so that they would not snap if you got caught aback... question is if there is enough 'depth in the sail' that would allow you to make the 'swing' - you would obviously not be able to sail atlantic style - which still begs the question how you get out of the situation.

3) last I can imagine doing a 'double set-up' on the hulls that meets official requirements - and mount something on the mast for the real visibilty (ie 2 or 3 colour rings, or just plain white) etc and hope people see you... but they can not guess direction etc from far.

tricky..

Fedor

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