Many pond builders charge by how many cubic yards of dirt are moved. Sheep's foot roller is very important in pond construction and packing a core trench even in high clay soils. If they don't have a double barrel sheepsfoot roller I don't even ask them for an estimate.

Get your price for each pond completed not by the day. They can prolong work for extra dollars.

aka Pond Doctor & Dr. Perca Read Pond Boss Magazine -
America's Journal of Pond Management