The phrase "go rocker" can be interpreted in a few different ways. If you're looking for synonyms for "go crazy" or "go wild," some options might include "go nuts," "go bonkers," "go berserk," or "go ballistic." If you're interpreting "go rocker" to mean something like "go with a rock and roll vibe," some alternatives could be "go punk," "go grunge," or "go metal." Finally, if you're looking for a more straightforward synonym for "go," you might consider "travel," "move," "depart," or "head out." Ultimately, the right synonym will depend on the context of the phrase and the tone you're trying to convey.