If you are on a 4800 take the port fwd cabin. You can just leave the door open to the bow cabin and place the baby there in the coffin berth. The baby will only be a foot away from you and there is nowhere unsafe he can go. The boat also offers outstanding shade so keeping the baby out of the sun will be easy. Move the baby in and out via the center of the boat not the suger scoops. Easy to hand the baby up or down. Do not try and board or deboard holding the baby.
The main salon table drops down and forms a almost queen sized berth. I would drop it down after breakfast and leave it that way until dinner. Perfect place to leave the baby to nap ect.. when underway. He can be kept in sight easily from the front or rear cockpit.
Bring bungee chords to use for extra places to hang towels ect. Where to hook them is obvious when looking at the cabin walls. I would also make sure you bring at least one noodle and a long length of poly ¼ inch rope. Thread it through the noodle and tie it under the boat. Perfect place to hang out in the water completely shaded.
G