Dig in the inside of the trail foot as a doorstop brace
For a stable base in the fairway bunker, rather than digging in both feet and lowering yourself below the level of the sand (which can lead you to chunk it), the Porzak Golf coach digs in the inside of the trail foot to create a brace that resembles a doorstop under the outside of the right foot. He says this keeps you centered.
Channel: PorzakGolf
Watch official source at 0:59