What I was saying is that a friend of mine is short CCME and won't cover because of the interest he would have to pay in order to short again. So, he buys the stock when he thinks it is going up and sells those shares when he thinks the share price is going down. All the while holding his short position. He calls this boxing the stock.
He often uses this strategy for the short term on trades too. For example, say a stock is soaring, he wants to short it at some point, but not yet. He knows though that if he waits to short it, there will probably be no shares available. So , he buys and shorts the stock on the way up. Then, at the point he wants to be short, he sells his long position to get into a short position only.
Make sense?
JB