Possible Clues:

• Belt-piercing tool
• It bores everyone listening
• What a bore the whole of it is, by the sound of it
• Leatherworker's poker
• How boring it is - entirely so, by the sound of it
• Hole creator
• Tool used by trawlermen
• Bore it's as well to avoid regularly
• Hand-tool used for piercing wood, leather etc.
• It's at its best when it's boring