A buddy of mine does this - he has a spreadsheet of 400 competitions he enters, some weekly, some daily, some monthly, you get the idea.
It won't surprise you to learn that he's the 'luckiest' sonuvabitch I know.
He's won vacations, new kit for his whole soccer team, meals out, tickets to things, etc
Just goes to show you really do make your own luck.
It's really no substitute for hard graft though, unless you win the lottery or something I guess...