I think you ND boys need to hit the training room or something if you can't get them tight by hand.  Every filter I've tighten by hand I've had to use a wrench to get them back off even lubricating the gasket like the directions say to.  Only time I have used a wrench is on the big oil filters for the C-15 cats.  Course I and others on here are smart enough to keep turning the filter after the gasket contacts the base another 1/2-3/4 turn like the directions say to.