You can just buy the spring starter from Bennett and put it on yourself.

Just a thought, there's also a "Jump Start" unit from C&H ignitions that makes hand starting very easy. Unfortunately due to health reasons, Bill the owner has shut down so getting one is probably not possible. But there's a Toni Clark unit "Easy Start" that does the same thing. I'm not sure how easy it is to get one since they are in Europe.

http://www.toni-clark.com/