This is what our sport league has done for the past few seasons. Our league bowls on lanes 1-6. All pre-bowls and make-ups are done before the league bowls and on an adjacent pair (7-8). The pattern will be whatever was scheduled for the lanes on the week you do the pre/post bowl, not what was or is scheduled for that missed or upcoming week. So theoretically, you could do most of your season's bowling on one pair of lanes and pick and choose your patterns.