Use the Dubro tailwheel--the only metal involved is a short length of wire that forms the axle/strut/then an extension that is bent over at 90˚ to make a short tiller. The tiller is bent to run under the edge of the rudder, and coupled to the rudder by slipping a short length of fuel tubing over it, and gluing the tubing to the under-edge with fletching cement from the archery store, or E6000 as the best recommendations, or PFM or Goop also work well. The fuel tube coupling serves to cushion shock to the rudder servo. This is the lightest solution I have found for a durable, steerable, lightweight tailwheel.

The CA Widebody would be an excellent follow-on model. It's a good build, reasonably priced and flies beautifully. I recommend it highly to any pattern flyer, whether as a practice plane or for competition.