I had a crazy idea when looking at a trend following equity curve. It looked a lot like a trending stock. The various channeling and horizontal resistance triggers looked like they may be useful. Then it occurred to me that these thresholds could be used to switch the capital in the trend system on or off. However, the inverse of a trend following system is a range system (I.e. market maker). Stewart Thompson calls it the Pgen. So why not switch the trend system off and run a Pgen while the market is thrashing, then switch back when the trend system's equity curve starts outrunning the Pgen's?