Finger's make it a bit hard for the lateral balance (wing tip to tip).. My method
may not be great, but it works for me... I tie some slip loops at the ends of
(long enough) kevlar string the loop it on the engine hub ( yeah I know it has
Rt. thrust) sometimes I put a screw in the center of the firewall... You could use
a pin or something... And on the tail, I slip the string right on the rudder hinge
line, be it on the hinge itself or what ever I'm using to seal the hinge... some
time I use the tail wheel...