Step 28: Steep Beach Theory
The beach was composed of stones. That means it's steep. The slope of a beach is a graph of the settling times of the particles of which it is composed. The book "Waves and Beaches" is the bible of such things.
The steepness of the beach meant it was a big pain in the neck to drag the boat up, even with the help of a skidway of sticks. In future we'll be sleeping on deck.