If the hole spacing is greater than 2 inches, the weight reduction necessary between using one set of holes and the next is too great to work within our strength curve. For board presses a gym needs two, three, and four boards glued or nailed together. Doing a board press is not the same as doing a rack press. When doing a rack press, the contact is only with the hands. When board pressing, the weight is transferred through the boards into your chest, shoulders, and arms.
Heavy dumbbells are necessary.
If you want to bench more than 600, you need dumbbells up to at least 175s. To do dumbbell presses, you need a heavy-duty stability ball, one that holds 2500 pounds. This ball helps build the small muscles that are hard to develop. If you want reversal strength, and who doesn't, the contrast method is a must, for example, sleds and parachutes, which sprinters use, that break away while running to help create the over-speed effect. Explosive and accelerating strength can be developed with the aid of weight strippers or the Release device.