Statfox can be used effectively, by "handicapping" the info given (nice to see it all in one place), but there is no quick formula for winners on it (like many believe). Yes, not all trends are accurate, but you can follow and track some that you find good, however, in my opinion, you can not bet them blindly, but I do increase a bet when I find some trends that I like on the side I am wagering on.
Killersports is another good site if you are looking for trends only. Hope this helps.