I found out here that if you destroy the Canoe it simply spawns way up on the map, saves some walking... And again I use a Settler to collect the treasure on the island (And a Cavalry unit to distract the enemies so that they stay away from killing my Settler), this way Morgan Black can just walk to Lizzie in the meantime instead of taking some boat trips. It's also funny that it's not necessary to take ALL cows to your farm, just 1 is already enough.