If it's minor hockey, or leagues where you have coaches, etc. I don't have a problem with girls/women in the dressing room for the pre and/or post game talk, strategy, what have you. However, any rink I have ever been in, especially in the last 10 years or so, have had a separate room for the females to get changed. I believe that this is the way it should be. I even played in a co-ed pick up league (basically pick up hockey, with set teams/sponsors) and the women changed in the designated women's room. I don't see why anyone would have a problem with this, or really be against it. I wouldn't want to get changed in the same room. I feel it would be uncomfortable for both. Sure, you are part of the team, but in a loosely organized league or pick up - there is no coaches, no pre game talk, etc.