Kneeling in a canoe often helps reduce the center of gravity while reducing wind drag under windy conditions. Wash your hands with clean water, soap, or alcohol prior to eating to avoid ingestion of harmful bacteria and other contaminants. Carry and drink plenty of pure water to prevent dehydration. Use plenty of sun block solution. Reapply after mid-day or after any swim.
Sunglasses help protect the eyes from glare off the river surfaces.
Tie in all articles in case of an upset. Wear a glasses strap. Don't take valuable articles along unless they are in a secure waterproof container. A garbage sack is NOT a secure waterproof container. A small Army surplus ammo box, tied into a canoe is a cheap waterproof container.