1. If you can get your hand on it, try using those thin rubbery things that you use to take a jar lid off with. It gives you great non-slip turning power.
2. If your filter has flutes on the end, use the end cap that fits over it with a ratchet. I know the Motorcraft filters I use on my truck and car have the flutted ends. With this type of wrench (end cap style) you never, ever, crush the sides of the filter like the other types of wrenches tend to do.
Good Luck!