Always pack according to the Ten Essentials. Particularly if you are a new paddler. The Ten Essential Systems list should be followed. With all my experience on expeditions I have still been caught on day paddles without a first aid kit when I needed one. I could have easily made the entire 'Tip list' lines from the Ten essentials list, but I will only mention it directly this once. My version of the list for kayaking is here, if you don't like mine the REI list - though not paddling specific - is very good too.