Hi Janet:
I live in Ipswich, and know the Castle Neck River well, so I think it will be a fun trip. Please let me know if a spot opens up.
If not, since I have access to Fox Creek, please let me know whether you will be breaking for lunch on Choate Island, as I might paddle over from my in-laws on Argilla Rd to join the group for the sheltered portion of the trip.
Chris Carroll