I disagree, however; I see this situation three or four times a season from both sides. Watch the latest video from Steeplechase for a great visual demonstration of how effective a leebow can be.
I didn't mean to say that cats can't leebow. I meant I don't think "tack or cross" is generally a useful tactic for cats. Given their straight-line sailing speed and the time needed to tack, if you can't cross then you can't leebow either. If you're aware of catamrans hailing "tack or cross", however, I'd be interested to be proven wrong. I'm happy to learn.
Regards,
Eric