Re: 180 shove it
If the board is just doing a 180 shuvit it would be a backside shuvit, or just a shuvit.
No idea how to do on a surf board, but on a skateboard or wakeskate you pop the board up, so the fin (wakeskate) is clear of the water the use your back foot to shuv the board round, while using your front foot to guide it. Basically pop then shuv. Can imagine it's easier to do on the flat than on a rail.