I don't think I'd have time to do crossfit well with my schedule; I'm in Taekwando class about 3-4 hours a week, (3-4 nights, with 1-2 classes a night) so getting to another location would probably eat up the rest of my family time. That and Taekwando is already, uh, not super cheap, haha. It's a hell of a workout though (I've never done anything as exhausting as sparring, save maybe a rowing machine). I do need to look at some other stuff to get the overall conditioning better though, so maybe some of the techniques they use I could apply at home?
I am a bike fan, and that might be something I can setup on weekends; I have a full suspension ANCIENT K2 that I refit a while ago for a 1x9 with disc brakes. I was a long time road bike guy back in the day (40 miles a day was not an uncommon thing for me in high school/college), so I'm not very skilled at proper MTB stuff, but I should probably get into it a bit, if only for cycling being less cruel to my busted-ass knees.