All-day sits are how serious rut hunters convert the calendar window. The hour after sunrise still produces — early-morning seeking traffic — but the 10 AM–2 PM window during peak chasing is where mature bucks frequently get caught crossing a pinch point at midday.
After peak breeding finishes (post-rut), movement returns to a more conventional dawn-dusk pattern centered on food. State rut date pages show the peak window so you can plan your all-day sits inside it.