Any kayak can be sailed, however some are easier to use than others. Double kayaks have the advantage of letting one person handle the sail while the other manages the kayak. Some paddlers have success steering rudderless kayaks under sail, but most will find a ruddered kayak easier. Folding kayaks have long had sailing rigs as an option.
Lee boards - to prevent leeward drift of the kayak when trying to sail close to the wind - are available for some kayaks. They can make sailing more efficient. Many kayaks will have enough [lateral resistance]? to sail reasonably well without lee boards.