Tori, I was thinking that netting is going to get kind of nasty hanging down in the water after a short while. I would think a good size piece of polypropylene line, say 5/8 or 3/4", might work just as well. Our birds can climb a rope just fine. Also, there would be no netting to get a foot tangled up in.
We taught our cat to get back aboard and I must say, training your birds looked like a piece of cake compared to our Snowshoe Siamese. He knew exactly what we were going to do before we even got started and he didn't want to have ANY part of it.
"I have never understood why it is "greed" to want to keep the money you have earned,
but not greed to want to take somebody else's money"
Wonderful story about forward thinking that could save the life of a beloved pet. Good for you! One caveat, however. My friends lost a beautiful dog that fell "overboard" while the boat was on the hard. The long fall broke its back. Pets that get used to jumping or falling overboard need special restraint when the boat is not in the water.