Re: How to keep from getting thrown off?
I went through a period where my clutch wouldn't disengage (eventually fixed it by replacing a bearing). I geared the bike down by using a smaller front chainring, and starting was much easier (with the clutch engaged). If you have a single speed coaster brake rear wheel, you may try a 3 speed coaster brake wheel like Nexus, Sachs or Sturmey Archer. That low first gear can be used for engine starts.
“You're only young once, but you can be immature as long as you like" -Unknown