Here is my rear handle that I got from Home Depot for 3 bucks.
A couple of things I learned in the install process.
1) In that the back glass is slightly curved I had to grind the handle pads slightly to match that curve. This made the mounting piece curve when the handle was tighten down and therefore sit flat on the glass.
2) A mounting piece had to be fashioned because the pads on the handle were just to small for anything to hold the handle on.
3) Speaking of mounting the thing that worked best after trying several glues/epoxy was Scotch Outdoor mounting tape. Found at any hardware store
4) My first though was to use plastic but the polycarbonate I first tried turned out be to brittle after it was drilled and counter-sunk. So a piece of hardwood molding that was lying around worked perfect.