Am I right in assuming that a lot of boat captains leave port at around 5-5.30am to coincide with the first tide and change ( low if possible and preferable with the low light )? . Following this, is this period then fished until the flood commences ( or vice versa ) and then a change of species is targeted i.e. halibut , rockfish to carry through to the next tide change. It would appear that the tides would then probably dictate the fishing day or at least the optimum times for productivity Is. this correct?