RE: Rattling
First, welcome to the forums. Second, I'd like to point out a useful tool that might help you navigate this site and at the same time, allow you to refrain from redundant posts. What you might want to post or asked has probably been posted before or asked before and might offer you more information. It is the SEARCH tool located above your log in name at the top right of the page along with FAQ/POSTING RULES and so much more.
We've covered rattling prerut many times. If done sparingly, prerut can offer you some of the best results from rattling. Like mentioned above, aggressive rattling this time of year in my area will scare far more than it will bring in. Light sparing does work from time to time but I prefer a good grunt tube over rattling.