1 Place the cover over the mainsail.

2 Pull the zipper together and close.

3 Fix the cover around the mast with the Velcro straps. Fasten with the buckle.

4 Define cover length to fit your boom with the separate flap at the rear. Adjust double layer of the flap and fix it with Velcro.

5 Attach the rear end of the cover with cord to the end of the boom.

6 Fasten the cover around the sail with the buckles.