I have watched the planes in the Museum, but usually not that long... So, in other words Capn, when we see these over-90 "zig-zag" routes, and especially the routes where a person was tired of putting in waypoints, and there's only three of them for a loop (obtuse triangle??), we can just about guarantee several plane crashes...
There are some routes where the turns are on the order of 30 degrees then two 75 degree turns to get back to #1 waypoint and start all over again...