I prefer to trade spreads in the interest rate products. The action is a little slower, so if you are scalper by nature, this isn't the way to go. Spread strategies can sometimes lower risk for position trades. If you want to be short treasuries for the long terms, you may want to look at selling the long end vs the short end of the curve. The 2s10s30s buttlerfly flattener has also been getting some attention as of late.