**"@Dale B when was the last time you tried #1?  Using the latest version PP2014GD I can now turn on and off IK place the foot at different locations and it mostly works as you would expect.  There is a small amount of movement but nothing that can not be fixed.  When you now turn off the IK for a foot or hand it creates key frames in the joints that were/are affected by the movement.  Just beaware that it is a forward only function, that is do not uncheck the IK then go to a point before that and try to turn on an IK in a different part."**

Yes indeed one can CAREFULLY reposition the feet after an IK switch off & on and not have major problems.
as long as you only create animations of people basicly remaining
Immobile.

However even going forward in time if your actors entire body has to move a major distance along the Z axis
( leap over a ditch for example), your IK influence that you tried to deactivate 100 frames before will magically re assert its influence and pull the actors feet towards the staring point.

"Some of the IK issues are hard to correct without using a different setup."

Is not IK essentially a  bodypart constraint system??

Did not SM recently implement "animated constraints" ??

why is it ,in poser pro, you can now animate the influence of a ball pinned to an actors left hand and "switch it off" as he tosses it 10 feet in the air and "switch it back on" as he catches it in his right
 hand??
I am no programmer for certain , but it seems to me the foundation for a true IK switcher  is already there.

"Pictures are worth a thousand words too. Some people may not know what is in other software animation wise."

the attached pic is an example of how C4D dopesheet lets me filter
out the other 973 scene elements and view the keys of just one bobypart.

 

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