I would suggest just checking out the Pick Tracker and Record Forum. They have verified results on various cappers from the last 10+ years, I've been on here religiously but don't post much. I'd say that's the best place to start though because you don't have to dig too deep in order to find out if their claimed results are real or not.
But as has been stated, there are so many guys with great insights and outstanding information posted to help anyone make educated plays on their own. Good luck!!