starting?

So I am working on getting this old tote gote running. I was thinking that for hunting season at some point I will have to park it and do some walking. I am worried that anyone would be able to come up start it and ride away. Any ideas on how I could somehow have a keyed switch so it would...

Hi,Does anybody know if the throttle should be wide open,before it starts, since my was being held open,even after it started,and the choke was acting like the throttle instead? Does the throttle and gov arm suppose to close back to the idle position,once it starts? I have the throttle cable...