I hand swing aeroplanes where I can reach without standing on tippy toes. That rules out a chippy, and plenty of others, for me. And anyway I need someone I can trust on the inside, especially with the super cub, which has shower of sparks mags. So one has to disengage the starter ( there is a switch) and turn the key to buzz the mags. Then the inside person has to get out engine running, from the front seat, and I have to get in. So actually I would rather be inside, with someone else doing the pulling on the prop. You going to come and do it for me? and what has this got to do with a C150 checklist anyway?