Thanks DIED. The reason I asked about that type of compactor is because of
this webpage I found. There is a comparison of different types of compactors halfway down the page. A vibrating roller/plate is the type they recommend for sandy soil. From the few soil samples that's what it looks like we have.
To roll the slopes I was picturing going straight up and back, from the center of the pond to the bank, instead of doing laps and leaning to the side. What little experience I have using a roller was on flat land though.
