I got another Bluetooth single ear headset that has the A2DP feature, Plantronics M55. Bingo, it works. A2DP (Advanced Audio Distribution Profile) is a Bluetooth feature for streaming audio through the headset. The M55 doesn't seem to work as good as my two ear Bluetooth stereo headphones. The distance is not as strong so it cuts in and out. I may take it back and get the Motorola HX550 Bluetooth A2DP headset and see if it works better.
So bottom line, if you want a Bluetooth single ear headset that works with the Hopper, make sure it has the A2DP feature. Not all Bluetooth single ear headsets have it. Also, some single ear headsets that can stream your Hopper can also work your cellphone too. That feature is called multipoint technology.