Chris may have it down. As far as I know there is no semisymmetrical tail dragger arf's out there. The only tail dragger trainer I know of is the SIG LT-25. Just glue in the 1/4" plate with some triangle stock reinforcements on any ARF. The gear can be gotten from Dubro I believe. I hear that Hobbico has a copla good semi's. I hear some good things about the Arrow listed by Chris. Good luck with whichever one you settle on.

Mark Shuman