IMO Trading is mostly dead, killed, or atleast MIA at the moment.
I dont think many people at all would have to patience to travel 3+ hours to do 1 trade. You'd only be able to take an inventory worth of items since carrying a boat with crates/chests seems rather impractical other land due to slow speed and with carts they then become useless when you get to a river..
Unless you have neighbors, yah pretty much screwed.