It's the "ice cream man" syndrome experienced by children. When the faint distant song of the ice cream truck approaches they completely lose their minds and focus on nothing else.
:laugh:
I'm using the 360 version of the game, I hear the roots pretty loudly but I also run in a zig zag pattern to cover more ground cause sometimes they are close to the water other times they are a bit further out, closely search any ruins or caves I come across usually something hidden behind a wall.
I always end up finding around 90 of them if I run around all bodies of water I just search in segments at a time. I miss one or two occassionally but if I'm feeling really obsessive compulsive I'll run the same route I took (Is took a word? I use to argue with my teacher about that) in reverse.