How does a band that’s already made eight albums together re-conjure their songwriting inspiration? They grab their surfboards, instruments and video cameras and tear up legendary surf spots around the world. Surfing is, after all, what first brought San Diego band Switchfoot together. The result: a movie that’s part surf film, part rock documentary and their ninth album written during their travels, both named Fading West. Here, the Christian-rooted band penned songs that stay true to their alt-rock (sometimes pop-rock) sound, but are a bit more electronic and anthemic. Saturday, Switchfoot plays at the Fox with thankfully healed frontman Jon Foreman. Their Fading West tour was nearly delayed after a surfing accident meant nearly 30 stitches to put his face back together.