Don't hurry if you see fish on your electronics. Hover in limited areas, working and reworking fish. Backtroll upwind, control drift downwind, saturating the area with lively livebait. Change the direction of your trolling path if necessary, moving up and down the drop-off rather than back and forth along it. Show the fish something different than other rigs in the area.
Patience is key.
If fish are aggressive, they'll bang a minnow right away. If not, it's not unusual to spend several minutes letting the minnow wiggle in their faces before triggering a bite. The biggest mistake is to breeze through good spots too quickly. Give 'em as much time as necessary to get a response. Boat control is key.