They all work but like any thing else it is the right tool at the right time.
In august I do a lot of scouting.
i) Go out at dawn or dusk and find where they are.
ii) Do a lot of walking in these areas to find the travel and bedding areas.
1) Early season ( Sept archery ) I am up in a treestand
2) Mid season october (muzzleloader) I tend to sit at the edge of fields
3) Late season december ( rifle) I drive a fair bit and am much more mobile on
foot as the rut is on.
All three ways produce but it tend to fill my tags early as I have very good luck with my muzzle loader. I tend not to wait for Mr. Big as that is not my priority however I have taken some Mr. Bigs in all three seasons. You just never know.
As I get older I don't like that -20 or colder weather so I put most of my time in Sept and October during the evening hunts. Cold and early mornings are for the young
All things considered I've shot and seen more deer while sitting than if I am moving regardless of if you are on foot or in a vehicle. I would hazard a guess that in my part of the country most deer are taken by road warriors.