I played around with it yesterday at my house in the city. I reduced the 1-1/2" outlet from the pump to 3/4" hose fitting, then attached the 50' hose and a garden fan spray nozzle. Then put the pump in a 30gal garbage can full of water. I times the spray to fill a5 gal bucket, it took 1min 15 secs.

I'm going to refine the delivery method when I get hom elater this morning. The pond is at best 50' wide, if I can get 25' or so from each side I should be able to cover the pond. Second option is to use a 120' hose and leave the drums on the end nearest the well house, get on the ferry (i changed the ferry in the pic to now move north and south, pic shows west and east) and start at the far end and work my way back with one solution then the other.

Sometimes ponds are like women, a small one takes less to manage and more time for pleasure