When it comes to synonyms for the word "boaters," there are several words you could use to describe individuals who enjoy boating. Some options include sailors, mariners, yachties, seafarers, rowers, navigators, or watercraft enthusiasts. Each of these words evokes a different nuance or connotation, such as sailors suggesting a more professional or competitive pursuit, while mariners might connote a sense of adventure on the high seas. Ultimately, the choice of word depends on the context and desired tone, but having a variety of terms to draw from can add richness and variety to your writing.