I'm not sure if this is right, but its sounds very similar to the song. The tuning is standard.
[ Tab from: https://www.guitartabs.cc/tabs/n/new_found_glory/boulders_tab.html ]
e-----------------------------------------------------------------|
B-----------------------------------------------------------------|
G-----------------------------------------------------------------|
D---5---5---5---5---5---5---5---5---5---5---5---5---5---5---5---5-|
A-7---7---7---7---5---5---5---5---3---3---3---3---3---3---3---3---|
E-----------------------------------------------------------------|
Repeat
Tabbed by Lake
any questions/comments email me at haircut89@yahoo.com