4-Post & 1-Post Hex Nut Retainers under competition stress?

Does anyone have any feedback on how the 1-Post Hex Nut Retainer w/ Bearing Flat 276-6481, 1-Post Hex Nut Retainer 276-6482, and 4-Post Hex Nut Retainer 276-6483 hold up under the stress conditions of a competition?

We used the 1 post bearing flats and they held up just fine. They are quite helpful for easy assembly of bearings. One thing to note is they are less tolerant of damage as the alignment prongs can be bent out of shape.

Same here. We have had no issues. One of my teams used the 1 post bearing flats in the drive train (fast mechanum base) for their worlds robot, and it held up fine. With all the defense there, was definitely a high stress environment.