Until you find a better tool than the 2X rule, leave the driving to others.
Use 2x for no more than five days a clip rolling each five day time frame forward instead of trying to backtest longer. It will save your sanity, and allow you some entry and departure points short term, that can get you the best bang for the buck long term.
It seems to me that when the pos goes higher so does slw only because it has to,why it dosent ??? I haven't the slightest Idea,siler sells for a higher price slw gets a higher premium,there profits are in writing ahead of time and work the same way no matter what ,the pos is what makes slw tick,yes??
My concern is unless there is a cost factor, POS should be the only variable that drives this stock. Maybe not an exact percentage, but something linear. It's a SILVER company. Not an electronics store who is selling a lot of TV's, but no DVD players. Or a car lot, that is selling a lot of certified used, but no new models. What else could/should affect this stock more than the POS?