Possible Clues:

• One's going to fall for the adders
• Summers are the season for rag and bone men
• Sways like tense animals
• Summer's reels
• Can't stand refuse collectors
• What they add up to makes one shake
• Staggers like a swimmer in a back street
• 'Having lost its head, the water beast's starting to fall (7)'
• Scrap dealers
• Is close to failure