The lunar theory of tides is based on:You have obviously never sailed have you? I have and the lunar theory of tides allows:
1. On the blind faith of people, on the printed word.
2. People do not want to think for themselves.
a) prediction of tide height many years in advance so we predict accurately what clearance there is under the boat so can work out at what time on a specific day we can enter a port with depth restrictions such as a sandbar.
b) Tidal flow direction at a specific point
c) Velocity of tidal flow at a specific point.
Items b and c mean that we can plot a course over ground taking into account tidal effects using information from almanacs (i.e. books) that you are so dismissive of. Your disdain for books (aka the printed word) reminds me of the attitude of TheBox, flat earthers and other anti-science cranks. You ideas are similarly nonsensical and pointless.