You MAY like 100.7 The Breeze, which I think broadcasts from the old WHTG tower in Eatontown. The signal is weak (5 Watts LOL), but you can catch it starting at around Exit 114 on the Parkway down to about Exit 98, or you can listen online at the link below. Maybe not full Yacht Rock, but a lot of Yacht Rock songs are played.
This is how they describe the station:
"Feel good songs, the ones you don't hear on the radio anymore, from artists like Chicago, Donna Summer, The Eagles & Rod Stewart and also great tracks from The Bee Gees, Billy Joel & Elton John. Feel good hits by The Beatles, Frankie Valli, The Beach Boys and the great sounds of Motown."