Possible Clues:

• Fabricate beastly sound and try to avoid notice
• Picked up inflatable mattress to go into hiding
• Told to relax on water with this and keep head down
• After falsehood mean to keep out of sight
• Keep one's head down
• Hide from view
• Go to ground, presumably
• Stay under radar
• Hide in Speaker's bed?
• Try not to be noticed