Regarding boots - minimize the chance of your boots coming apart by buying good boots. Second, along side the duct tape bring two small tubes of super glue.
This past season was my first high hunt, second time ever deer hunting, but not a newbie to the backcountry. Needless to say day three my brother-in-laws "Guide Wear bla bla" Cabelas crappy boots ripped 180 degrees above his heel. Remembering that I had brought super glue for medical emergencies (can't beat super glue for instant stitches!) I pinched the material together and glued away. It gave him one more day of hunting and just enough time to hike the 10 miles out.