I measure through the center only, both for length and width. Depending on the fabric, it's repeat, etc. I will use either LOF or WOF. If the fabric has a very small print, I don't worry about matching and cut WOF and piece. If there are directional issues or specific repeats that matter, I will cut LOF. I cut the measurement of the middle of the quilt. I start pinning in the middle of the side or top/bottom and work my way to the ends. I match the end of the border fabric to the end of the quilt and 'ease' in any excess. If your 'excess' is in the quilt, put that side against the feed dogs. If your 'excess' is in the border fabric, put that side against the feed dogs. The feed dogs will help 'ease' the excess fabric while you are sewing, usually without much puckering. Particularly if you distribute the excess throughout the width/length of the quilt/border. That's why I start in the middle. Fold the border fabric in half; fold the quilt in half. Finger press both folds. Match up those marks, match up the ends and evenly distribute the excess throughout each half.