I would agree with you. If I'm close to a roosted tom I will not let him hit the ground without first hearing my sweet tree yelp from my slate call. However I do not call to him right away. Most of our toms will gobble for 30-45 minutes on the roost before hitting the ground. I try to time my call in the last 10 minutes before fly down. A few times I have heard another hen on the roost beat me to him and I immediately respond back when that happens.