i drill a hole with an auger and drop down a sump pump, attach to a small length of hose , and fill a big clam sled full of water , drag it across and dump it ,.. it’s a lot of work .. my pump is not strong enough to hook a long hose and spray ...
my friend picked up a gas powered pump and fire hose ... that is the way to go .. done in 2 minutes .. always do in the evening so night temps really set up the ice ... it’s still a learning process , i hope to have a better method next winter .. are you also doing a rink ?