Why schedule head to head with hockey if there is a problem with parking? Michigan needs to stop being educated idiots and use some common sense.
I live 2 hours away from UofM (on a decent travel day) and I can attest to this debacle. I help with our high school team, and sometimes we try to skip out of practice early to catch a 7pm dual at Michigan. We break speeding laws the whole way there, then hit awful traffic trying to get into Ann Arbor, and then hit a parking debacle as we come up near CK Arena. I parked in a nearby house's lawn for $20 one time only to miss the first 3 matches.
The wrestling fans in Michigan are largely involved with HS and/or youth wrestling. MYWAY wrestling dominates the youth scene around here and they compete on Sundays during the college season. Most youth families are busy all day at a tournament of their own rather than going to a match in a crowded Ann Arbor. The high school fans are stuck trying to get there on a Friday night or a Sunday as well, and that has its troubles as well.
MSU is much easier (though, it's MSU, c'mon) so we usually try to get there when a team that we actually enjoy watching is coming to town.
In most cases, I'd rather drive all the way to Iowa City to watch a dual there rather than deal with Ann Arbor.