what should I do/excpect after the morning bite?
It doesn't seem to matter as much before and during the morning bite, but once you figure out the direction of the undercurrents you will want to be more precise about your heading in order to dial in your prime targets.
For example say early on in the morning you had success trolling across the depth ranges east/west, but the currents are flowing SW. After the bite dies you would want to skip out into deeper water, slow your troll down, and head the opposite direction of the current to increase the action impacted on your setups down in the depths. Most rigs should be set around or below 60. Usually flies outproduce spoons when properly dialed in like this.
If flies aren't triggering bites but marks exist and kings are in the area, I would suggest switching to spoons because speed is not as critical without a flasher
Remember fish smarter, not scribbled.