I thought I had some saved articles about Direxion, iPath and ProShares tracking issues but I cannot find them. I may have just let them go when I reformatted my hard drive.
You can short VCLT or LWC. Didn't Mario recommend long maturity Treasury short in last years Barron's roundtable?
Two thoughts for you though. Mario's group runs some CEFs_maybe you can just ride with him via one of those. The other is Floating Rate ETPs (FLOT, FLRN, FLTR, BKLN), CEFs or I prefer the active management of Fidelity's FFRHX. You would benefit from the yield curve change and I guess you could margin for leverage once the trend change is in place.