I read We the Navigators when prepping for my first trans-Atlantic. It was a pleasure to study and provided techniques that actually worked in the field.

"Expanded landfall" comes in handy spotting particular clouds over islands at vast distances.

"Star course" is a terrific technique of learning the sequence of stars that rise or set on a particular heading. Steering by the stars is considerably easier and more accurate than steering by copass.

Reflected waves didn't work for me, but wave profiles for various current vs. wind conditions is valid.

Regards
Chet