Mad Buck Growl here. I like how loud it gets. I've already had bucks going across a field with the truetalker that couldn't hear it. Gets awful windy here and the extra volume helps.
I go to great lengths to be as scent free as possible and don't use any scents. I've had them mess up some opportunities before and don't believe in them. Pressured deer in 'the real world' know what scents are imo.
As late in Oct as possible unless you're on one in his summer pattern when the season opens. Early season around here is basically an hour in the am and an hour in the pm...possibly a little more if the weather is unseasonably cold.