Possible Clues:

• A lunatic arranged to race on track - that's a measure of how far those on course go
• Mariner's measure (2 words)
• Oceanographer's measure
• It's a measure of crafty type in the distance synonymous with The Fleet
• Measure originally defined as one minute of latitude
• New and precious type of floor covers cool institute and that's a measure of a crafty sort
• Precious type opens new floor over cool institute and that's a measure of a crafty sort
• It takes one an hour to make a knot
• Main distance from actual line I'm dancing
• Measure used at sea