You could achieve a random effect without scripts.
1) as has already been suggested give the AI moron a placement radius equal to the size of the map (or the area you want)
2) give each of his waypoints a placement radius equal to the size of the map
3) make the last waypoint CYCLE so that he keeps moving if you don't find him
You won't know where he started or where his waypoints are. That should do the trick.