It only took me about 30 minutes to install. I was pleased to see that my new (large) Zumo XT2 fits on the mount without rubbing on the bars. I sometimes wish it was higher - like the GPS mount on my BMW GS - but on the Ninja 1000SX, this is the best solution available.
Pretty straightforward to assemble and to mount using new bolts for location at the petrol tank anchoring points. Position on Bike correct for any size person to view, and adjustments are easy.
This bracket seems to work well, unfortunately the very first day I used it in anger with my new Garmin nav, my bike was stolen!. Haven't therefore had the chance to test it out on a long term basis. Hopefully when my bike is replaced I will get another.