Very high satellite looking lights that change course.

It was a very clear night at our lake house and we were on the boat dock looking at the stars. The wife Vicki and I on the opposite ends of same couch lying down. Every 15 min or so we can see a satellite moving high and on a straight course. We were both watching the same satellite when at the same time we Both said WOOO,, Did you see that. It moved slightly to the side and slowed then back the original speed... So we were back the next night looking for this action again. And again we did see the same thing 3 more times over three nights. Only looking 1hr a night. Then I started researching if a satellite can adjust It's course ? And I don't see that it can do that. I did see a very vivid sighting in the 70s and Im always looking.