Float plans are useful for any boat, whether it's a kayak or cruising yacht.
A float plan includes all the pertinent information the Coast Guard will need in a search, including the names of the owner and operator of the vessel, description of the operator and passengers, and information about the vessel. It will also include info about your trip including departure date, departure location, destination, your planned route, if you will have a buddy's boat close by, and your expected return time. Also, consider adding another page with photos showing the make and color of the boat along with any identifying markings, and the size and brand of your outboard. And don't forget to notify your emergency float plan contact when you reach your destination and if you materially change your plans. Some details in float plans may vary depending up on the length of your trip.