It depends on how many days you are going for or if it is just the final day but our general strategy is as follows:
Pick up a relatively unknown group at the first. Less crowds will give you more chance to see the course.
On about the 6th, get into a grandstand (or a good viewing spot around the green) stay there for an hour or so, hopefully some of the big names will come through in that time.
Now pick up another group and follow them until about the 12th. Again, a less well known name will let you see more. Repeat the process, sit around the green for an hour or so.
Finally follow a group round to 18 and get the best spot you can to watch the finale.
You can, of course, just go straight into the underserved section of the grandstand and be sure of a good view of the winning putt but you miss out on seeing the rest of the course. If you are only going for one day personally I would go with my plan.