Here's what rhymes with staysail.
fail sale sail veil hail shale vale hale faille male scale mail pale tail tale avail jail nail rail frail gale whale bail stale wail assail bale dale pail snail flail kale wale detail trail prevail email travail inhale quail quale bewail braille derail mainsail topsail unveil foresail grail taffrail wassail hightail entail curtail exhale pigtail impale bobtail pellmell lugsail carrell gunwale ponytail countervail monorail hangnail fingernail martingale nonpareil swallowtail tattletale