We really liked the job our pull-behind chain link harrow did behind a disk on corn stalks.  We found it had fantastic trash clearance and really leveled out the ground - worked clods down quite a bit. 

We did not lift the harrow on the ends or through waterways, or it would dump a pile of trash.  But it would turn while down, no problem.

It does make for a longer combination on the road and when turning in the field - need to pay attention.