Act like as if you were a slippery snake. These are all principles of Wing Chun. With strong people, I have to change quickly so that the opponent can't grab me. In sticking hands, strong opponent's often try to grab. To realistically stop a grab, I have no alternative but to hit my opponent hard with my elbow or anything else that I have free.
Principles can definitely improve anyone's fighting.
Even just thinking about the principles can make a significant difference to your Wing Chun.