www.skifanatics.net at Rt 93-exit 28 in Campton may have a pedal boat to rent out as they have a lot of different paddle boats like kayaks, and canoes, and paddle-boards, so maybe they have a pedal boat too?
http://www.waterville.com/summer-pla...e/boating.html has pedal boats for rent along with kayaks and canoes and paddle-boards, but probably only on their 7-acre town pond, Corcoran's Pond, which is located next to the town beach, and town Ice Arena; a very huge, luxurious indoor ice skating arena that is used for hockey-figure-recreational skating in the summer in 40-degree, icy cool refrigerated indoor comfort.....a good place to chill out. Both the pond, and the ice arena which are very close to one another are both pretty chilly, but very happening with many visitors when the weather gets hot and tropical. Corcoran's Pond is owned and operated by the Town of Waterville Valley-Recreation Dept and it has three WaterBee pedalboat hourly rentals; two 2-seaters, and one 4-seater where all four get to pedal independently with four un-synchronized sets of pedals......how about that!