Another way to combat this is for everyone to set a sell price WAY above the current PPS. This locks your shares up so that they cannot be shorted. But it has to be a concerted effort.
However, if peeps want to flip for profits, no way to get around this. With ADMD, there are plenty of shares and a great many old and new investors, so much more difficult to accomplish when the stock has been hitting new highs every day.