what u didnt consider is the river flowing in the opposite direction and the wind too
ur boats cnt get there, and if theyll mostly be destroyed by storms
welp then u dont quite know geography
there are set winds mostly going alongrivers n stuff
also its wayto hard to capture an island with a large fortress inside of it whilehaving to face the wind
and also the monogls for example failed cus theyr landng boats were destroyed by a storm and they were trapped on the island
and that happened twice