I only trade part time, and have no shame in admitting I have limited success.
I do watch a lot of CNBC and Bloomberg. I can't help but think they hinder rather than help me, though.
Take last week. I was watching, I think, Fast Money - I remember hearing them say something like "who would...
Another site you can try is http://www.exdividenddate.co.uk - it doesn't have many bells and whistles, but you can filter and sort companies shortly going ex dividend by both historical and projected yield and also dividend cover.