A "whipsaw profit" in the making on Chemring?

In my Position Trading book I raise the possibility of notching up whipsaw profits by employing guaranteed stop orders. These are 'notional' profits (i.e. avoided losses) that accrue when the spread betting company is obliged to stop you out at your guaranteed stop order price at a time when you can re-purchase immediately at the more favourable gapped-down price in expectation of a subsequent