In similar vein, today I had the pleasure of checking out the (soon to be famous) Cumberland
trolley (take a look at the pictures and see if you can spot the snafu
with this otherwise well-thought out design). I mention this mainly to demonstrate that it is
possible for trolleys to be custom manufactured to suit specific requirements.
By the way, JoLee, did you mean four castors when you said "four swivel wheels". A mistake, in my opinion. Best to have two fixed wheels at one end, and two braked castors at the other. Otherwise, how are you going to control (steer) the thing? It's not too late to change the spec, I hope.