This was brought up in the YJ forum, but applies to TJ's as well...
Some Soft top rear windows get hazed up from the roll up straps, well - I can't roll my rear window up I (ok- Pavement ends tops don't roll).
I just use some of these tarp clips and bungee it to the roll bar. http://automotive.hardwarestore.com/...s--653830.aspx
The back window lays flat along the ceiling.
It works fine if no one is in the back seat (at least no one taller that 5 foot).
No rolling = no scratches.
but cheap (as this forum implies)