European players
Send them when you're going to sleep. I usually get loads of elixir+gold when I check the game again in the morning.
Forum Discussion
See this link for a bug that is allowing some to do well without even knowing why.
http://forum.ea.com/eaforum/posts/list/10153960.page
http://forum.ea.com/eaforum/posts/list/10153960.page
