I agree with the guys above. Scents went out my door about 4 years ago. As far as using antlers and grunt tubes, that is hit and miss. It's not easy to give just a general answer on these tricks. Ultimately it just depends on a particular deers mood. If there is a good time to use these, it is more so during the pre rut. Say, that last week in October into the first week of Nov. Also, have had success duing the post rut, that last week in Nov.
Check out Greg Millers books on these topics. I think he does a great job with these.
Rattling is something that I just got back into doing last season. I had terrific results with a new approach.
I used a med size set of antlers, around 100" set. I like to be able put them in my back pack. I didn't get aggressively loud with my rattling as in the past. A smaller set suits me fine. IMO loud aggressive rattling spooks more deer than not.
As far as calling blindly, I do that and it has worked well in the past. If I'm doing this I usually call with the grunt tube every 20 minutes or so. Rattling, every 30 minutes. I try to coincide the grunting and rattling together if I have antlers with me. Depending on the day sometimes the intervals shorten a little, particularly when I've seen deer behaving aggressively.
IMO, don't rely heavily on calling tactics. I only consider them a trick in the bag. Scouting, scouting and more scouting for those perfect travel corridors is the high percentage way to kill your deer every year.