Buy a Copper Ground lug like this ( approx $ 1 ) ...
http://www.galesburgelectric.com/files/images/large/d_7929.jpg
Then insert the frayed cable into it and tighten with a screwdriver,
The Attach Something to the Ring.
I Used a 1/4" x 3 in long Bolt with 2 nuts to make it like a T handle
Works fine so far for over a Year.
Bill
November 2009