Buy somewhat deep in the money PUTS maybe 2 months out.
Better than TBT IMHO, because TBT tends to erode while you wait patiently.
Options erode in value also.I prefer TBT as the way to short TLT.
TBT is the better play for quick moves. The options are more liquid and active, and they are cheaper. If you are bearish on bonds (expect rates to rise), buy call options on TBT.
Sentiment: Strong Sell