So I added to positions there as well by going long AGQ. I sold a lot of other small positions to keep liquidity in check.
I think I'm in a good position in both silver and oil now but what could I have done better? Well I was too eager to add short positions when the charts started to climb. The reason is that for a long period of time nothing happened and then when there finally was some action it was hard too keep the patience. I thought I had learned enough about patience but apparently not. The result was that since I was already in for a fair share of the portfolio size it was hard to keep adding when the charts became more extreme. I did add but less then in the beginning. A better approach would of course have been to be in a position to add more in the later stages with the more extreme prices.