The thing about any time is that its too imprecise to do things. Game developers should have had an option where you can be notified of online players during story mode. Of course with the option to turn it off in settings.
Okay, here's an idea. I suggest that we attempt to log into our respective wii's, and anyone else is welcome as well at exactly 15 minutes past the hour and exactly 15 minutes before the hour if we are looking for matches. That way, it will take about 1 minute to check if anyone is around.
I realize we all have different schedules, but perhaps the "universal meeting time" will find a couple of people at their machines at the same time.