This is where the "FISH KAR" license plate from pre-game hint 3 came in. Alexandra was driving around the course in her car, a red Honda Prelude with license plate "T HUNTS" and a number of felt fish magnets affixed to the side. 

In the rear window was placed the license plate "KATCHME" and this is what teams were supposed to write down for extra credit.

Alexandra tried to make herself as obvious as possible, trolling slowly up and down streets, and letting people get a good look at the car. At one point, at the top of Montgomery descending Union, she passed about five teams, and as she was inching her way down Union Street one of players suddenly screamed "FISH CAR!!!!" and about thirty people began thundering down the street after her yelling "STOP! STOP!"

Knowing that this half point clue might prove a wild card in the final rankings, Alexandra made every effort to give teams a second chance to get this clue, by parking her car in front of the Bay View Boat Club at the finish. People had to walk right past it to check in at the end. Amazingly, very few teams noticed the car.

And indeed, this clue was the spoiler clue, as it meant the difference between first place and third for Team Advil 2001.  We won't be using this in YABA4, in retrospect it doesn't seem fair.

(worth 1/2 point - no "first team" letters) Find the moving target. You will know it when you see it. Look through the windows and you'll find what you're looking for. (part of hint 3)