Paul, that is the kind of accident I am trying to prevent by not shorting at all. If I am wrong on a stock I lose about 2% of my folio, maybe even as high as 5% if a really doubled up hard. I get about one such accident a year (of the 2% size...) and I can easily live with it since I always have few that are double baggers in the year (COO, COCO, some Q and CCMP just reached those levels here) the rest is gravy. If I were to short, I would expose myself to that kind of accident. One thing with accidents, they are "accidental" but they have a non zero probability of occurring...
Zeev