I initially had my snorks in the center.
I moved my rad to the rack and the snorks to the sides (equal ammount on each side)
Everytime I tipped in water I was done, I got sick of it and moved my rad back and my snorks back to the center.
Fits my riding better, which is; water, mud, water, little more mud, some trails and water.
EDIT: look at my pics, I have had both and have pics of both in progress. Personally I like the center snorkels better, and I think the bike looks more stout this way too.