I agree somewhat with some of the other posts. I have decided that with the extensive drill program underway, KXL will either fly or... and I have stuck around this long and might as well hold while the many assays come out.
That said, I don't think it's a bad idea to have a definite plan in place and stick too it. It might be take some profit at a certain level, or sell off a portion to preserve some capital if the SP goes below a certain level if the results come in disapointing. Stop losses are controversial, but they take some of the emotion out of the equation, especially when done when the SP is stable like now.