There really isn't any need for crew to kneel or crawl on the ground to inspect the catches. Phones with cameras are now almost universal. Surely quickly holding the phone at or near ground level and a quick 'snap' up at the engine would allow easy inspection of the photo?
This has the added advantage their check would be documented!
While I'm sure it would be even better to get hands on the catches, this would be a lot better than not checking.