There are various synonyms for the phrase "buffet the waves" which means to struggle against the force of water in a rough sea. One alternative phrase is "battle the surf" which carries a similar connotation of fighting against the power of the ocean's waves. Another possible synonym is "brave the breakers" which implies a sense of boldness and determination in the face of challenging conditions. "Combat the tide" is yet another choice which emphasizes the struggle of staying afloat against the constant pull of the water. All of these synonyms convey the idea of persevering through difficult circumstances with strength, courage, and endurance.