Possible Clues:

• Clare, for one, immersed in tennis lesson
• Speck in the sea
• Spot in the water
• ''Robinson Crusoe'' locale
• __ of Wight
• 'Cast Away' setting
• ". . . here on Gilligan's ___"
• Bit of land surrounded by water
• Small piece of land surrounded by water
• Wight or Man