tiller play
If the source of the play is in the hinge of tiller fitting you might try shimming it with something thin like a plastic playing card. The bolt that hinges the tiller could be a little worn...try a better fitting bolt or a few washers. I have a little play in mine but it doesn't bother me because I know the connection is solid.Now, if the source of the wobble is in the rudder stock or its connection to the fitting you have a more serious problem. You might have to haul the boat out and remove the rudder to examine all problem areas. There are some pretty good articles on this process. Try sailnet.com if no one else responds or you can't find anygthing in the archives.