Ha yes, it's interesting to see what other Taco's are pulling! The large window is over the Dinette and across from the couch. That setup was actually one of the things that sold us on the Jayco 19H.
I am using the CIPA Universal towing mirrors. Not all that expensive compared to others I have seen but they work pretty good. I actually ordered them after I read a couple of positive reviews on the Toyota Tacoma Forum. I just ordered the wide angle mirrors for them, they should work a lot better with the wide angle. They stay on pretty good and don't move around too much but if you leave them on for more then a day you have to tighten/adjust them a little. After the initial adjustment to fit on your mirrors (which took far longer then it should have since I had to do it in the pouring rain when I picked up my HTT), they don't take long to put on/take off (less then 5 min to put on and adjust, about 30 seconds to remove). They were just under $30 each at Amazon.