barney, that is exactly what I am suggesting. But my guess is finding a Laser rig in good shape and
cheap won't be easy, so you might have to build the entire rig from scratch. This would not be that difficult, if you are reasonably handy and are able to obtain both the tubing and the rig
hardware.
Laser rig requires no shrouds, the only things that need to be attached to the
deck are the traveler fittings (back by the transom) and the sheet block (in the footwell). To attach these you will probably need to open up the hull (and then close it with
inspection ports), so you need to be very sure where the
hardware will be going first.
(edit: looking at your pictures more closely, I can see a sheet block just aft of the daggerboard trunk, so you may already be all set for that)
Try to buddy up with a local laser sailor to see exactly what is needed... the hardware you will need is really minimal and pretty easily obtained, IMO.
Used Laser
sails are
sold all the time on ebay. I assume you have the
rudder and dagger board.
One concern I have is that your boat is a lot shorter than a Laser, and a standard laser rig might be too much sail although the most important consideration is the amount if live ballast you put on the boat and you sailing ability and agility. There are smaller laser rigs available if that turns out to be true.
The other consideration is the balance between the sail and daggerboard centers of effort. If the distance from the mast step to the daggerboard trunk on your boat is reasonably close (eg an inch or two) to that of a laser, you should be ok.