according to peter j cooper, silver mining shares provide all the leverage you could want or need:

The stupid way to leverage silver is to go out and borrow money to invest in this highly volatile commodity. A much more sensible approach is to buy silver producers and explorers whose share prices are leveraged against the price of the precious metal.

With silver touching $14 an ounce today, and the cup-and-handle formation in the price charts promising a shift to the upside, there has seldom been a more appropriate moment to consider how best to leverage up on the price of silver.

http://news.silverseek.com/SilverSee...