"I find logs to be helpful during HTTP attacks because you can find out who is attacking what and block the offending ips.[/QUOTE]
We should still pass along the IPs to your server (at least if you have the mod for LiteSpeed done).
One other option, at least if you don't like the "I'm Under Attack" mode, is to temporarily turn your security settings to "High" for Basic Security Level & this will challenge more visitors with a captcha.
Are there areas you don't want traffic from? You could also look at blocking rules on your server from countries you don't want to access your site.