Usually, you want to set your exit strategy around solid trend lines, in my opinion. That is why HLXW is so intriguing. The 50-day moving average is at 1.84 (today), and that's WAY up there. The middle Bollinger band is at 1.11 (that's usually a conservative exit point). You could take the .60 exit which is the last minor bounce level. Even that is 3x where you are now. Or the 10-day moving average is at .44 (still over 100%). So basically, watch closely and see where it is headed...that's why people say, "when it bounces, it will be big." I don't know HOW big, but pretty much every stopping point I see is still way up there.
Still...we haven't seen the pinch yet, and it could still be days before it happens, and those trend lines could move down more before it pops. Once it pops, look at those lines and pick a target, or sell a few shares at each, all the way up.
I'm not a promoter or broker-- just a regular guy who likes to trade stocks for fun and make some extra cash. Do your own DD.