As for the cow I'd rather use a Piper Arrow (My Instructor used to call it 'a flying pig' so it's closest to the cow and not as expensive as the 747) and fly the Waypoints of the question. Use GPS and GIS to cover for the mapping of the flight path
Or - if you're really serious use this:
Turning radius is:
Assumptions to be made (if not you'll end in hell - frozen or not)
Standard rate of turn - 2 minutes for 360 deg. equals angular speed of 3 deg per sec.
Assume either all in cruise at a given cruise speed (easy variant)
or the flight path profile from take-off to landing (have fun and a CRAY or something to calculate it
)
Then - radius of turn is a function of True Air Speed. Now guess the wind
Or assume that bank is given - usually 25 or 30 deg on airliners so you get the load factor - together wit Air Speed you get radius of turn.
Another solution is: Grab a 747 Hang two ropes on either Wingtip hang an anchor or plow at the end and make a low pass along the waypoints the broken houses, dead cows, funny diagonal plows (reminds the corn signs) mark the way