Firstly, why are you trying to get yourself a sticky by taking credit for a video made by someone else, when you put absolutely none of your own work into it?
Secondly, the Yak was used as an example, I never once said that the wheel in the video was a Yak, or that the wheel used had a plastic bearing cup.
Thirdly, If you knew shit all about wheels, you would know that eagle sport made their signature wheels with thicker slots, to prevent ovalising. Twizzler wheels have a bearing slot just as thick, if not thicker, so if you have ovalised a twizzler your doing something wrong. Not sure whether you drop off 30ft ledges or ride with an axel looser than a whores vagina, but something went wrong somewhere.
Fourthly and finally, why risk ruining your wheel for good when tape works? Half of the leeches that come here looking for help stuff up putting bearings in wheels in the first place, so what do you think will happen when you let them loose with a hammer?
In the end, whatever works for you works for you, but your idea of doing it is completely over-thought and has the potential for many things to go wrong, when you could just take ten seconds out of your life and put some tape on your wheel.