I have a Step On/Off rickshaw for hire in the UK.
It has robust off road mountain bike wheels and optional balloon wheels for beach/soft ground work.
The operator can walk on and off the deck during the shot using the adjustable back brace for support.
The rig can also be hard mounted with the Klassen self levelling Garfield bracket.
A seat can be added to convert it into a conventional style rickshaw also.
It has optional shorter handles for use in confined locations, and ground clearance is easily adjustable with a single allen key.
For more photos check out my site at www.alangloversteadicam.co.uk
I have also built a few to order for UK operators.
Hope this is of help