You have read about the unsuitability of uncut sailboard sails for land yachts.

However if they are rigged correctly on the mast they were intended for (written on the sail) with heavy downhaul pressure they are perfect as they are for our yachts.

Most land yachts don't use anywhere near enough downhaul tension to make these uncut windsurfer sails set properly.
The result of this is a sail that is too full.

Give it a try. It will surprise you.