Hillbilly, I've been using a backup mirror with my 3 pt blower for close to 30 years now and wouldn't be without one. I've never had a stiff neck! It was first used on my JD750 tractor and quickly moved inside a cab I built for the same. Two years ago I bought a Kubota
B2650, built a removeable cab for winter use and moved the mirror into the new cab. The mirror used is a side mirror off of a semi truck and is mounted horizontally above and in front while sitting in the cab. When first used, in the beginning, it was on a bracket attached to the top of the rops on the JD and then moved inside after making a cab for it. Mounted horizontally, the long mirror gives a nice, wide, undistorted view of the blower behind. Steering while looking into the mirror is intuitive and easy as can be! The few times you need to or should look over your shoulder or to the sides is to look for traffic at the intersections, foot traffic, etc. I have a build article on the Kubota cab that shows the mirror on the orangetractortalks website. You can find it with a search for "Kubota
B2650 Cab Fabrication". The mirror also has a heater built in but I've never had the need to wire it up. Here's a link to that build (if it works):
Kubota B2650 Cab Fabrication - OrangeTractorTalks - Everything Kubota
Maybe this will help with your ideas.
Regards,
David