I live and die by the charts...and its an excellent question - where do you bail/exit...
I try to use indicators on the 30 and 60-minute charts to nail my exits when things get overheated. Also correlate with the stochastics on the daily.
Then you can sit back and watch what happens. Does the stock pullback hard, or does it base and start to move up again - then you get back in when you're comfortable another run is coming.
That way - you can catch a full run, but also play it safe and cash out in the intermediate steps...just in case the next run doesn't come.
My 2-50 bagger range was based on what I've seen other similar stocks do in the past. For now, I'm comfortable with 0.30-0.45 as a target range for the next run, beyond that I can't see :)...