I have gone to a Decorative Concrete Seminar today and was discussing "Concrete Pumping" from a tow behind unit or pump.  I am a Landscape Contractor and have perfromed Hardscapes for several years and have decided to go into decorative concrete.

I had discussions about "pumping concrete" with one individual that ran the seminar.  I must see he was incredibly knowledgeable but insists that pumping concrete for decorative flatwork is not worth rental of a tow behind pump becuase just running it will prove more work than it's worth.   

We are talking about anywhere from 5+  cubic yards? How would you get the concrete to an inaccessible location?  What are the costs to rent a tow behind or boom pump?  What is the cost of a tow behind unit that will pump 3/4 agregate at a 4-5 inch slump?

Thanks