Pull starts
that and do you really want to try and pull start a cranky OS .61?
about the only use I can see for pullstarts on a plane is with ducted fans. I have seen 3 difrent starting methods for DF (shaft through the rear, shaft through a front panel, belt start) and I think they all are not worth the trouble, a pull start would be nice and easy, eps with on board glow.
open hatch, prime, flip switch, give a couple of pulls and fly.