I know it's different in different countries but here in Aus, Brisbane Cat Centre have been making the Nacra 4.5 which is 15ft for a long time, this is their biggest seller with many hundreds made. they are a skeg cat that weighs about 120kg, for junior sailing weight is your friend and properly positioned beach wheels sort the weight out. I was there a couple of months ago picking up my latest 5.8 and saw a new 4.5 and 5.8 popped out of the molds, the new Nacra 15 will just add a performance factor to an already busy sector which includes the high buoyancy 3.5, 4.3, 4.5, 5.0 that Bris Cats are also making

Jeff Southall
Current boats
Nacra 5.8 1703 Animal Scanning Services
Nacra 5.8 1667 Ram Raider
Nacra 18 Square
Arrow 1576