Can I use goesyncronous satellites to satisfy observing tasks?
Yes. The only difference is in how to plot the position of a geosync satellite on the observation forms. You can certainly observe the satellite over an extended period of time to generate a “pass” with respect to the stars (actually, the stars would be streaks and the satellite would be stationary). To save your sanity, however, I suggest that you simply plot the satellite as a point with respect to the background sky, and identify it accordingly on the chart.