I'm going to look at clips tomorrow. I just got my kilo together tonight and I seem to be having a problem with toe overlap and I think clips will position my feet better and hopefully avoid overlap as well as the other benefits.
As far as goalie goes I haven't played it much but the last game I played the other two players I had didn't seem to want to alternate with me. I think they were too worried about losing plus they are faster players than I am at the moment lol. The other guys were much more newbie friendly.
I am really enjoying playing as I think it's the most fun I've had on a bike in a long time. It's so rewarding to make your own stuff too like mallets, covers and such. Gives each player such personality.