I have a bow and will travel!

Seriously, I understand how that can be a problem. One thing you could try is laying chicken wire in front the windows, that is a similar tactic that has been used to keep them from tearing up hay bales in other places. I've heard that they don't like the way it feels under their feet, might be worth a shot.
Then again, they are doing this because of a hormone surge, so a sexed up gobbler may not care about his feet.
We are once again having our windows attacked by the bird brained gobblers. They see their reflection in the window beside the front door and attack themselves by beating their heads against the window- to the point of leaving blood and slobber on it. Plan to tape up some cardboard to the window tomorrow but it looks trashy so I need to figure out a better alternative to keep them away. Besides which when they are attacking their reflection they are leaving lots of poop at the front door. Nice to have wildlife at home but some of it is quite a nuisance.