I have cloned them in flowering before and just reverted them back to 18/6, and have had moderate success... But, I suck at cloning, no matter what I try, so I rarely do it, and when I do, I rarely get anything to live. I have my best cloning results from most strains when they are in rapid vegetation, and not flowering, although I have done it, and know others who have done it with blue cheese early to mid flowering as well...