Hi
ive sailed an SL at the europeans at Brightlingsea, good fun,tended to nosedive when it got windy, more fun!
I'd say they are a great choice as a youth boat or indeed for anyone light who doesnt want the extra power of something like a Spitfire.
It felt like a smaller heavier Spitfire with skegs.
Let them race if any turn up.
They will soon be wanting to buy one of your boats WITH BOARDS, this is the biggest difference.
I doubt if they will point anything like as high, but they should join in anyway.