I too have a major issue with what does, and does not, constitute Yacht Rock.. i AM a fan of yacht rock, yet I cant consider anyhting prior to ‘77 or post ‘83 as being yacht rock- and even those bookend years are stretching the limits.. for example, Climax Blues Band are basically a two hit wonder; their two hits are both good songs, but there’s no way that Couldn’t Get It Right could be considered YR.. it came out mid 70s but sounds like it’d be more at home late 60s or turn of the 70s, around ‘70 or ‘71.. NOT yacht rocking at all, but an excellent tune.. their only other big hit is a love song from like ‘81 and is very much aligned with yacht rockism…
Steely Dan for me though, is a gray area in re to whether or not it is YR .