Wing chun is not known for grip strength. People do not know it for grabbing people, nor do they know it for ripping muscles off the bones.
What it IS known for is its punching. Fast. direct. deliberate.
The bottom three knuckles handle most of the impact. The middle metacarpal is strong. The ring and pinky metacarpal are soft, flexible, and bendable.
Looking at the fist from a high level shall reveal how soft it really is. A bundle of bones attached together with nothing more than tendons and small muscles.
If your grip is weak, there is a good chance that your fist is also weak. Weak hands soften the impact.
Grip strength will help you hit with a much harder fist.
I came upon this realization after a few weeks of hitting the bag. I had to limit my power cause I could feel my hand reaching its limit. I would not dare go beyond its limit. i am not looking for a broken hand. But then I decide to enhance my grip for a totally different reason. I wanted to be strong. Strong hands help make you feel strong. Thick forearms are also quite intimidating, but I digress.
I discovered that my hand to handle stronger impacts. My hands desired a strong impact. Something that could challenge them. I was shocked to discover that I had surpassed my previous limitation and my hands were asking for more.
So again. what was I afraid of? I have flattened my knuckles from hitting too hard and it has affected my dexterity. The grip training helpped prevent my knuckles from feeling flattened. It was a good feeling. I believe the grip training strengthened my whole hand and tightened the ligaments. Everything got stronger. I could hit harder.
If you want your punches to have impact, you must train your hands.
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exercise tips.
grip squeezers with that spring thing are the worst. I've lost interest countless times. Here is an alternative.
materials
get a thick rod. a meter long would bee perfect. 3 feet would be ok too. attach a weight to one end.
Exercise 1
Hold the bar like a hammer and hold it like you hold a suitcase by your side. lift and lower the heavy side SLOWLY
Exercise 2
flip the bar to that the heavy side is on the opposite side (pinky side).
Lift and lower slowly.
Exercise 3
kneel down and sit on your heals. On the balls of your feet. place the non weighted side under your shin ; this shall be the fulcrum. The grip the middle. the free end shall have the weight on it. grip as tight as you can then release slowly. When the bar is almost to the point of dropping, start gripping again. THE KEYWORD IS "SLOWLY"