Possible Clues:

• One no good using an oar may be getting under one's skin
• Extreme agony among legation trained to embrace sport
• Type of toenail that can cause pain
• Like painful toenails
• Developing inwards
• Like in the bed of nails causing pain
• Nail this with gin for the oarsman going on foot
• Such nails may hurt in good brawling
• A mixed gin while you''re at the oars is like a crooked nail