Sometimes we realize we have a slow block or a fast block.
If you get a slow block, try putting it on the board with your last shot when the other guy has the hammer, you’d be surprised how often he’ll cut you a 7.
A very fast block can be used in a similar way. Try to shot something high with it and your opponent will try to kitchen it and push it right on through, you may steal a few hammers along the way.
Keep track of the numbers on your blocks so you know what’s fast or slow and watch your opponent, if he is shooting out of order there may be a reason.