Perfect thread for this little refresher...
Don't practice this when you need to, start doing it even if you can drive a truck right to them. It will pay off when you finally dump something in a really lousy spot.
https://www.youtube.com/watch?v=X4kJIrW1IDM
Doesn't take long, just a knife and backpack that can fit quarters.
Also very handy for moose or elk even if you can drive right up to them. If you're by yourself that's ok, an hour you'll have it in the truck and just moderate amount of sweat, no big thing.