Edit time ran out:
Since the above is partially a semantic answer (rename 'kata' to 'technique drills' and problem solved
), the first answer to your actual question that entered my thoughts was "If you have trouble measuring IP within kata, you're not displaying enough IP in your kata for it to be measurable."
The purpose of kata training is to add stuff like timing, placement and technique (locks, throws) to the IT drills, so you need to be sufficiently proficient in the IT drills and then add aspects of kata training until you arrive at full-blown kata training.