Well O-dub is fun, but because it pulls counter clockwise, it's less beneficial if you're regular footed. If you're regular, I'd recommend McCormicks, unless you are proficient at switch... But yeah, that's just me. And I'm weird.
Also, I've only been to o-dub... But their rental gear looked crappy (aka, very well used), I wasn't too sure about what rental gear was for sliders or not, but honestly, I'd recommend your own gear if you don't mind running the risk of weakening it to the point of it being easier to break.
Mid-Week december, both places should be relatively dead. I went mid week in december the year before last and it was astoundingly non-busy. I went mid week in March and it was also not busy at all. There was even a storm, and later on afterwards, I had a private session with two other people. It was sick. And lastly, usually cable parks have a closing time near what is usually sunset for that time period. The hours for OWC for winter are on the site somewhere, just keep looking.
Again, I don't know anything really about McCormicks, so I'm talking about my experiences at OWC.
Last edited by wakeboardern1; 09-26-2010 at 8:11 PM.