24 hr Harbor Islands excursion, pix are from Great Brewster adjacent to Boston Light. Water and air temp both in the low 30's so I wore a neoprene scuba hood with a neoprene ski facemask in addition to my normal drysuit (various blogs from paddlers in Canada and Minnesota recommend covering your face to avoid frostbite but also the counterproductive reflexive response that can happen from plunging face in cold water during accidental rolls). With the hood and facemask rolls don't feel much different from the Pacific temps I'm used to--the first one feels fine, several in a row cause a cold headache but nothing debilitating so far. Stayed warm the whole time with the exception of the windy and exhilarating beachside change of clothes from the damp drysuit to my camp clothes. Bivvy sack pictured is seam sealed GoreTex, army surplus from a company called Tennier, tons of these brand new on eBay and Amazon (I think they are literally an out-of-style color). Cheap, light, compact, amazingly waterproof, insurance against New England where you can't trust the winter to stay winter. Compact inflatable pad from Klymit is small enough to store in my PFD pocket where I hope never to benefit from it's buoyancy, that plus the old foam pad (which I cut in half so it stores in the underutilized space on either side of my skeg at the stern tip) was luxury. Dark color of the bivvy blocks sun better than a tent and was awesome for a 3 hr nap (on my private island) between taking photos in the morning and paddling home.