We’ve just returned from packrafting adventure in Patagonia. Basically, we make W-trek in TdP, then rafted down Rio Grey and Rio Serrano, went the Rio Tyndall up to the Lago Tyndall, crossed the Lago, cut through jungles to Lago Geiki, crossed it, cut through jungles to Lago Balmaceda, crossed it and a couple of other lakes (got ourselves into a storm in a lake with lots of icebergs, was cool!), again cut through jungles to Seno Ultima Esperanza and paddled the fjord to Puerto Toro. About 200km in 2 weeks.
A couple of sprayskirt rings malfunctioned (so we had to give up the end of the route, which was to paddle 30+ km in the windy fjord and cross Peninsula Antonio Varas to Puerto Natales), the rest was just cool. It was our first packrafting trip, we plan to continue. See ya in Greenland!