I'm posting this thread on be half of my friend.

He has a Nacra 5.5 sl 1996 make and it's time to buy new sails.

He is playing with the idea of changing the sail plan

1. Main sail with square top and more sail area.
2. Smaller Jib that will enable to install a self tacking system. (losing the mess on the tramp)
3. losing the bridal foil
4. Adding a spi

He dose not race at all. Class legal is not an issue.
He is attached to his boat and will not sell or change it.

Has any body done something like that before?

How will the modifications to the main and Jib effect the sailing experience on that boat?

Will the mast take the modifications?

Is this a good idea?

Thanks,