While I support the concept of a short on silver (at least conceptually – I just generally close my long in practice) I still don't understand your grid-drawing algorithm.
I get the parallel parts, and some of the grid lines, but not the others.
For instance, I understand the lowest uptrending grind line – it touches 3 different lows (more or less). But the other two uptrending lines? They touch nothing – at least no "closing" points.
And the grid lines are anything but regularly spaced.
It seems like one of those things where you, if you put your mind to it, can (ex post facto) draw your grid lines wherever you like. The lower downtrending line, for instance. Why not draw it against the Dec/16 low instead of the June/16 low?
I really wish you had a computer algorithm do this for you so things would remain regular and consistent. That way we could see if there was real merit there.