Organising Feeders

I have 7 feeders on my bird station. 2 of each filled with mixed,sunflower hearts and black sunflower and 1 niger seed. I'm always experimenting,switching them around,for example,putting 2 of the same next to each other,or alternating them,etc etc. Can't say I've ever come to a combination,where I've thought that was the best way.

Have any of you got certain ways of organising your feeders?

Thanks,Colin