HOW ABOUT MAKING THEM ACCEPT DELIVERY OF THE COMMODITY?:

Two Traders Will Urge Changes in Gas Market (ANN DAVIS and IANTHE JEANNE DUGAN)

A former Enron trader who is one of the energy markets' largest speculators plans to make a surprising recommendation to commodities regulators: rein in the ability of traders like him to influence prices.

John Arnold, head of the $5 billion hedge fund Centaurus Advisors, is expected to argue before the Commodity Futures Trading Commission on Wednesday that trading should be limited in the benchmark natural-gas futures contract at certain points on the New York Mercantile Exchange because in-and-out activity can distort the underlying or "physical" gas price. [...]

In other testimony, Michael Masters, a hedge-fund manager and commodity-speculation critic, will suggest broader restrictions on oil and gas investing -- including banning investors such as pension funds from trading in major oil and natural-gas futures.