Lifeline netting is NOT a replacement for lifejackets! It's used to try and keep toys, tools, and people from going over.
Complaints of shifting knots and knots coming
undone on the ends leaves this option:
Car Seats and Booster Seats
Although car seats are not required in many of the islands around the world, they can be handy in larger countries with car safety laws - or even as a safe place to buckle-in when all hands are needed on deck.