One tidbit that may save you some frustration (and maybe some labor)...have your truck driver spread the rock out in the staging area by driving off while it's dumping. I have found it much easier to scoop up larger rock when it is spread out thin rather than scooping from a pile.

Maybe I'm wasn't doing it right, but it sure seemed that the weight of the piled rocks made it hard to get the scoop under it and get a full load. I ended up having to drag the rock out first and then scoop it up. Still didn't get a full bucket load, but ended up moving it faster that way.

(This was for moving large rock as back fill to retaining walls, not pond dams, but the principle should be the same. I guess larger equipment would help...I was using a skid steer that was on the smaller side. IIRC it had a 5 ft bucket.)

Fish on!,
Noel