Why not just drive around with the glass up?
I dont understand what you are asking, you want to make a zip in rear window for your Explorer? Why so you can unzip it when it's not raining and zip it up when it does?
Clarify please. And what are T top bags?
OH BAM it just hit me, you mean the bags the t tops go in after you remove them! hahahaha! so you've got a guy who will make a bag to hold your rear glass after you take it off......is that it?
Hmmm......You could replace teh factory glass hold in bolts with some quick release type fasteners. I would be more worried about breaking the glass around the bolt holes...maybe have a rear window made from Lexan?
I have been thinking fora few years about making the big side windows of my BII removeable, instead of chopping the top. It can be done, but man it's gonna take a lot of custom fabrication to get it to seal up for wind and rain, and plus it would be best ot have Lexan windows instead of glass.....hmmmm...