Check your zero every season and after every miss or bad hit with the ammo you plan to use...
Shoot your bow from you tree stand, with full hunting gear on and with the broadheads you will hunt with...
You can not beat a deer's nose, forget the fancy scent absorbing products, learn where the deer will come from and hunt the wind...
In addition to 2 flashlights and extra batteries, take a clip on flasher type light...When you kill a deer in the evening, clip on a limb over your deer so you and your buddies can find it in the dark...
Cheap scopes are just that and will cost you a deer...I'd rather hunt with a cheap rifle than a cheap scope...