Stake the plane. Then keep, move, or refuse.

Start with a datum sheet if you have never seen your elevation. Start with a floor session if you already know it digs.

Sheet

Datum Sheet

Tray, ticks, written plane. Fifty-five minutes.

Floor

Stake plus keep-or-refuse. One hundred minutes.

Tide

Existing stakes after the first king tide.

Fog

Morning fog written onto the same datum.

Flag

A brass-clipped card. No framed grind.