I have just played my Surfaris CD called Hurley Sessions, it is a live in studio recording. Not available here in Britain to my knowledge so I ordered it from their website from the States. https://www.thesurfaris.com/ It is a great album and includes their version of Apache.
The main difference with surf music and Shadows is Hank used a tape echo while surf guitarists used a spring reverb, both sound great.
Is it just a coincidence that The Shadows in Britain and surf music in the USA came out around the same time?