Remember the rule of twelfths
starting at either High or low tides
in the first hour the tied will either rise or fall 1 twelfth
in the 2nd hour 2 twelfths
in the 3rd hour 3 twelfths
in the 4th hour 3 twelfths
in the 5th hour 2 twelfths
and the last hour 1 twelfth
so when going against the tied the best time is the first or last hour the worst the 3rd and 4th hours