Most checklists contain great links to other useful sites. Ensure long hair, arms, etc.
Ensure boat is safe, e.g.
Exposed to the morning sun - Free of rocks, roots, etc. 50 people are killed and 2,000 seriously injured in personal watercraft crashes each year in the U.S. - Even though personal watercraft make up only approx. While riding on a jet ski, etc. Constantly look around for other craft, obstacles, etc. 2 minutes in water and drown within approx.