I want to start the skis and let them run for a few minutes but I'm not sure where the hose hookup is. Searched this forum and youtube with no luck. Thanks for your help.
You sure that's not a female fitting? I don't have this model, but on most the connection should be threaded on the inside to allow connection of a water hose.
It appears on some older models, it may need an adapter:
FFWD to 8:00 on this video:
Feel inside the end of the tube. It's threaded unless threads broke off. If they did, you can put a Tee in the supply for cooling line and buy a quick connect