[Nachoman]

How was a two hundred foot high balloon able to navigate, to change course and altitude?

A motor, propeller and a rudder.

[bert]

Think inertia and then think about your proposed solution again

[midwest_hiker]

You need real time data in order to change course in a baloon. You have to change altitude in order to catch differing wind directions. I have been in a hot air baloon many times. If you have ever been to a baloon event you would know this.