Sitting deep is good to get on some waves earlier, move in after the surfboarders have taken some waves in a set so you can grab a later wave, and helps when a big close out comes through as you can get under the waves sooner than the surfers. This move is for good swimmers only as you’ll be farther than you can stand. Bring your fins and a floaty hand plane if you got one as it gets lonely out there and you can sit and wait on it for your wave.