I used to use autonomous self-follow drones (Staaker, Skydio) with no pilot needed. The Staaker actually tracked a wrist mount gps device quite well, but it had really short effective record times and was extremely loud. Still way better than any image tracking technology (DJI). Moved over to 360 cams (GoPro Max and Insta360 X4) due to the simplicity and more stress free operation.
360 cams will "flatten" swell height even more than regular action cams due the the extremely wide angle (and I ride pretty wimpy swell to start with), but the advantage I see is that they provide a reasonable full perspective of rider and background without too much distortion if you choose a balanced reframing view/angle. (I'd also rather watch any so-so video than read 1000's of endless words of people describing their winging technique/experience or gear choices

. That's just me)
0 to 1 minute is my old Staaker self-follow drone from 4 yrs ago.
1 to 3:13 minute is my 360 cam mounted at the rear of the center strut
3:13 to 4:22 is my 360 cam in a fixed position (boat, tripod) Not good for waves but a nice option otherwise
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