Scott Dinger took home the Leprechaun "Pot 'o Gold" trophy two years running with the Baby Flite Streak powered with a Tee Dee .049. It is a very capable design. I think, though, that a really, really light Jr. Flite Streak with a Big Mig or AP Wasp .061 would be dynamite! I saw one with a Tee Dee .09 at VSC one year, and it flew great. No real effort at lightening on that one, so I think with the .008 lines instead of .012, and added lightness the .061 would suffice.