Do not conclude that increased "buck sightings" or activity is an indicator of full rut. This is where much confusion is started.

Peak rut is the small time frame that the majority of the does are bred. The running around of bucks - mature or not - really has no true correllation to the above.

Cold fronts, new moons...etc......can greatly increase the daylight activity of bucks - again this has nothing to do with does being bred.

I am a firm believer in photoperiodism - (deers actions controlled by hormones - triggered by daylight)

For the most part - the true "peak" rut has limited mature buck movement - as they are on hot does that often do not move much and often seek out deep cover.