Can you use a rack and set the bar low so you have to squeeze under it?
That way you have to press the bar off the pins from the bottom FIRST. Let the bar come to a dead rest with each rep.
I kinda agree with this except I stress maintain tension through out the whole set. Let the bar stay on the pins for a second or two while you are pressing with some tension just not enough to move the bar. Keep the focus in the the chest then push through. Its a technique Poliquin uses in winning the arms race for over the head half presses in the power rack.
I’ve used it for flat bench with a lot of success with myself and my clients. Think of landing a plane when you lower the bar. You want it to be a smooth and even as possible, the bar should touch both pins at the same time with as little noise as possible, maintain tension in the chest, and repeat. Practice makes perfect. Starting point can be from the top or the bottom, I prefer the top it will allow you to use more resistance.
The entire point of benching from the pins is to remove any advantage obtained from the stretch reflex and force the chest to contract without that benefit against a weight that is at a dead stop (much like fully deloading the weight between reps on deadlift makes things much more difficult).