The Pemi is probably in snowmelt flood about now, eh? I suppose it might be packraftable at this time of year, but otherwise the sport would seem to be limited to the larger valley streams – Saco, Androscoggin, lower Amonoosuc. Better prospects for remote rafting in northern Maine, methinks; I've been considering a run at the Allagash, possibly linking with a chain-of-lakes route that would roughly parallel the AT thru the 100 Mile Wilderness, with occasional white-blaze portages. Or so goes the lead-in to a bigger pipedream – "aqua blazing" from Maine to Georgia. :)