How old is the local team? Kids, teens, adults? Main reason I ask if shutter speed. If it’s small kids you can get a lower ISO at 1/600 of a second. If I am photographing high school or higher end I am up at 1/1600 because they are moving much faster.
The glass really isn’t too bad generally, yes it can be annoying if really dirty. If it’s kept up decent, you can put that lens hood against it and it will look fine.
As for positioning the corners behind the net work well. Gives you a chance to take photos of them coming down the ice at you in a way. Then also can move across to get the net for shots or goals. Of course you can move around throughout the game.