Stations in Multisurf: help!!

[Akeswins]

Hi to everybody.
I used multisurf to make my 7,8m hull, and I created stations at non constant distance , then I built each station doing snakes : project snake for hull, create projctmagnet on kneesurface, unite magnets by a snake, all this for every surface. Snake lies just in selected surface. It' s not a fast method, considering that the hull has more surfaces on wich to make to lie snakes (hull,knee, side, upper edge..) . I tried to create a polysurf to unite that surfaces and project a snake , but polysurf bevels every angle or edge, and doesn't help at all me.
Do you know a faster and precise procedure, with this software?