I feel your pain, but if you're sawing for "Grade", then the length or width is often a non-issue for woodworkers who want quality lumber. A four foot long #1 grade board, is often worth more than a 8 foot long #2 or 3. It's worth it to cut off the knots, keep the board stacked and dry for resale. Most of my "woodworking buyers", want clear lumber, and anything over 4 foot catches their eye. Most want at least a 5/4 board (because of planing and sanding loss), and for cabinets etc., length is no big deal.