I get a bodyweight training newsletter. This is the one that came recently. I thought I’d share this type of pullup, and see if anyone here has attempted it. And I had to mention the pullup king, ZEB! Here is an excerpt:
You will need a couple of rubber mallets. Hold the mallets by the heads and place the handles over a pull-up bar or anything overhead that will support your weight. Position the handles so that they are parallel to the ground. You will want to move the mallet heads in close to the bar. Leave a little room between the bar and the mallet head for your thumbs. Now, attempt to pull yourself up. Because your weight is slightly offset from the bar, the mallets will naturally tip towards you when you pull down on them. The tilting of the mallets will cause the mallet head to rotate down towards your thumb and, if you are not gripping tight enough, out of your hand. Your task is to keep the mallet handles parallel to the floor throughout. This requires tremendous wrist and crush strength. Do not allow your wrists to bend back. In fact, attempt to bend them forward toward the bar slightly as if you are doing a wrist curl. Resist the rotation of the mallet head in your hand by crushing as hard as you can.
Try it out!