The problem with using % triggers with this (and other) stocks with small $ P/S amounts is that they can make a sudden jump upward that triggers the buy or sell, but then quickly returns to where it was, locking you in or out of the stock. Depending on the % amount you set you may end up with a loss. That works in reverse if you use the % trailing stop loss. You may get stopped out and then the P/S quickly returns and now you are locked out.
A good example was the last EKSO move. Using a 15% trigger would have gotten you in a bit late on the move, you would have been up slightly for a very short time and then lost it all and more when it came back down. Then you are stuck in at a level you didn't intend to be in at.
Hope that makes sense.
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