Remember to put the gun in the back of the truck before leaving the house to go hunting.
Make sure your ram rod is secure, especially if you're walking through thick cover.
Don't leave the water bottle in the truck.
Never try to make adjustments to your tree stand when you're already up on the tree.
Make sure your ammo bag is secure. Really sucks when you only have one round in your muzzleloader and your ammo bag has just fallen off the tree stand.