Interestingly, I don't think that Sailing is a good example of the genre from a musical stylistic standpoint. Certainly from a vibe and theme standpoint, yes, it's renowned. But it's a song with a solo vocal built on acoustic guitar and embellished with strings, in A major with pentatonic picking in a very steady tempo - that's not the primary yacht rock sound. Yacht rock is generally more about multi-piece instrumentation, with jazz elements in key/scale, varied tempo, and layered vocals. Deacon Blues, Minute by Minute, and Biggest Part of Me are far more quintessential yacht rock songs.