Well I'm a believer...I rattle in good deer every year. I sometimes "take their temperature" if I see a buck a long way away. I pulled the deer in my pic and one similar away from a doe. Don't know why he left her but I'm glad he did.
I usually don't really get after it until I see some chasing. It is a nice thing to try in that 10-2 time if you are pulling a dark to dark. I once rattled in a giant 8 pt at noon. I wasn't paying attention and he walked all over me. Find the right buck and he will respond, he may just sneak in though.