We use leftover floor joists and a long aluminum plank to create a platform to work from that allows us to safely lift and nail OSB sheathing into place.
We opt for a vertical application of 4′ x 9′ sheets.
Properly spaced nails ensure each sheet is fastened tight against the studs, creating a flat wall devoid of heaves that would remain noticeable after the siding is installed. The nails also provide shear strength so the wall will hold up to forces created by strong winds.
Sheathing cut out of window openings is reused wherever we can find a use for the scraps. In this case, we rip them into strips to be used as drywall backers.