This is just the way I've worked it out, not sure whether Beach Fossils actually play it 
like this. Sounds good to me though.

Tuning, tune the A string up a step so:

E A# D G B e

Guitar 1

e |----------------------------------------------------------------|
B |----------------------------------------------------------------|
G |----------------------------------------------------------------|
D |---2---5-----2-----0---3-----0------7---8-----7-----2---3-----2-|
A#|-2---2-----2-----0---0-----0------7---7-----7-----2---2-----2---|
E |----------------------------------------------------------------|

Guitar 2:

e |-------------------------------------------------------------|
B |-------------------------------------------------------------|
G |--0---0-0-0-----------------------2---2-2-3---2---0----------|
D |------------3---2---0---3---3-0-------------3---------3---2--|  x2
A#|-------------------------------------------------------------|
E |-------------------------------------------------------------|

---------------------------------------------------------------|
---------------------------------------------------------------|
---5---5-0-5-7---3---3-3---3-3-----2---2-2-3---2---0-----------|
---------------------------------------------3---------3---2---|
---------------------------------------------------------------|
---------------------------------------------------------------|

--------------------------------------------------------------|
-----------------------------------6---6-6-6-6-----5----------|
---5---5-0-5-7---3---3-3---3-3--------------------------------|
--------------------------------------------------------------|
--------------------------------------------------------------|
--------------------------------------------------------------|