As for rules for our tomboy comp, We don't have many!!!
The model of course has to be a Tomboy designed by Vic Smeed in 1950. Small changes to the original free flight plan are allowed such as dihedral and rudder size. We have not specified a particular motor size but want everyone to fly on a 2 cell battery.
Like Vintage it is a fun event with a minimum of rules! We run a 30 second motor run and award points in ascending order with last down gaining a 2 point extra bonus.
If you wish to build one talk to a Club Member about how to get plans and who can help you with mods on rudder which will improve handling.