RE: Tri cycle conversion to tail dragger question??
It is OK to leave it free floating as the rudder will control the turning. I personally don't like the loose motion of it. You can also use the pull-pull tailwheel assemblies such as these:
http://www3.towerhobbies.com/cgi-bin...?&I=LXCLK9&P=7
http://www3.towerhobbies.com/cgi-bin...?&I=LXBN38&P=7