2017 T-100 Crg Bar End Lane Splitter Install Help

Standard mirrors are only good for close scrutiny of shoulders, as you say.
To get around this unacceptable situation I purchased from a company called Squaredeals, over here in the UK 2 pairs of mirror extenders which simply screw onto the original mirror stalk and I now enjoy a full, unrestricted view to the rear.
Not the method you're looking to employ I know, but another option, which does work.
Curly

 

So you want to fit some bar-end mirrors ?

Take the allen screw (holding the coverplate) out of the bar-end and use that to install the new bar ends.