model67a:
you should use your stop loss to guard against losing a whole lot.
One thing to consider when using a stop on any stock, remember it cost you $10 it's the same as placing a new order, So if you use them dont set them for Good for the Day, set them Good Until Cancelled, that way if at the bell your stock didnt hit that target price it will remain on there and you wont have to worry about spending another $10 the next day to place another
PS if your stock climbs high you'll want to adjust that stop.