Tyler Firesword here, giving you great information on how to access the boat to the Krokoshpinx and School of Balance. In the pyramid of the sun you have to do a task about a mander scroll from hetch. It talks about the Order of the Fang or something. Eventually, Professer Winthrop will ask you to meet him in the throne room of fire. Finish all the tasks and you will be able to get permission from Seargent Major Talbot to take the boat. You will need to go to the school of balance. The teacher will ask you to venture into the Krokosphinx and begin looking for the order of the fang.