I tried two options, one was a home made version, since no one made a suitable bolt-on unit, and the other, a triangle unit for the back axle which could be unscrewed and carried on the bike. Best solution was don't do anything and simply lean the bike against something. There's no law saying you need a kick stand so I park it anywhere I want now with that excuse in case I ever have a problem, but surprisingly no problems and I always get the best parking spots. Just don't obstruct the walking public.