One of the best ways to make some easy money in Assassin’s Creed 3 is from robbing convoys.
Convoys only appear in the Frontier, and are fairly well guarded. Convoys will typically have a captain, several soldiers, and a drummer. In order to loot the convoy, you just need to defeat everyone guarding it. Once you do you’ll be able to interact with the back of the convoy to get your loot.
Convoys only really spawn during the day, but during any weather conditions. They can appear randomly on the map, but they also have some particular spawn points
There is one convoy spawn point that has a high chance of spawning at the Templar Fort near the south-western area of the Frontier.
If you want to farm this convoy, travel to the nearby harbor and use this as your traveling point. If you don’t see the convoy, then fast travel to another location and come back to attempt to spawn it again.
This convoy should have around a 50% spawn rate, so you can loot this convoy repeatedly until you have as much money as you want.
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