I am 77, so my technique is nothing to brag about. I am lucky to even be able to do it. I put the TW in 3rd gear, turn the ignition on, hold the clutch lever and push the bike as fast as I can. Then I quickly throw my leg over the seat and release the clutch lever. It's a little difficult for an old man, but it works okay on pavement or hard dirt. If I can find a significant hill it's much easier. I just sit on the seat and let the TW coast down hill until I get enough speed before I release the clutch. Maybe it would be cheaper to carry a spare battery than to pay $200 for a kick starter.