Pony Express wrote:

No, they are sticking with their stock sunfish
rudder. We did it partially for simplicity and
uniformity. We put the same rudder on the JY14's
as well. Then we just keep a couple spares on hand
and they'll fit any boat.

Good idea IMHO. Sending students out in boats with
undersize rudders is not a good idea. Once they get
the idea, it might be nice to let them get a handle on
the sort of bad handling characteristics they'll
encounter out in the real world, but then also sailing
a boat with an undersize rudder leads to some bad
helming habits.

FB
Doug King