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If you go . . .

Reservations: Check out www.hermitisland.com for its complicated reservation system. Reservations are best made by mail and open for the summer on Jan. 1. From $37 a night.

Don’t forget: Insect repellent, all your food, and a canoe or kayak if you have one. Closest amenities are 30 minutes north in Bath, so bring everything you need for your stay.