You can read up about this online but there are  a few time-honored tips for getting your kayak ready for a night or two away where you'll be camping on islands. 


1.  Pack small as well as light.  For example, a full size medium weight sleeping bag can pack into a 6" x 4" space after synching.  It goes without saying that if all you have is an old sleeping bag that doesn't pack this small, it may be time to invest in a new one.

2. Use ziplock bags where you can to keep everything dry and easy to find.

2. Use modern materials