in the last couple of weeks Ive been chopping up some windsurfer sails after not having the right sail on a realllly windy, perfect salt day.
most of them started life as surf sails in the 4-5.5m range, these sails tend to have a very similar profile,luffcurve anddepth to the sails we would call a "landyacht sail"
the biggest is only a 2.5m down to a 2.0m
I tried to make sails that needed a short mast and a longer boom, the theory being to have less heeling force , but still get some accelarating power from the long foot. here are the results

a 2.5m stormy from a 5.5m Picasso. the picassos are great recutters, even when making bigger4-4.5m sails. sail sits on a 3.6m cut down RothoWave mast

a 2.4m stormy from a JP? surf sail of around6.5m. again no recutting of the luff, but a mast was made up from an old early carbon 1 piece. the mast only measures in at 3150mm ( add150mm for a regular mini) also quite long in the foot, no flappy bits and battens that tension with an allen key, really stiff carbon tube type battens


Atiny 2m cut from a 4m stuart bell surf sail. stiff carbon battens but only webbing tensioners. shorter in the foot and using that 3150mm carbon mast

finally a 2m from a torn neil pride RAFof about 5.5m. simply made by slicing off the bottom of the sail at the luffpocket hole , and adding reinforcing at the clew and tack