Hi
@Tyce ,
On the slow loop, what determines how far the ball rebounds off your bat (or ultimately what controls that) is your grip pressure and delta (change of grip pressure) at impact.
If you are soft, rebound doesn't take ball very deep. If you loosen during impact, you can get ball to drop very short after crossing net.
The thing that makes it easier or more difficult to keep ball low over net is how low you let ball drop and how high ball is when you impact.
If you let ball drop below table and slow loop with a loosening hand, it is medium difficulty to get ball low over net and bounce it short... you are only working with 5 feet or so.
If you strike the ball some where between table height and net height, it is MUCH EASIER to make a heavy loop low over net, but you have to have a little more rebound, which means a little less loose at impact, but still loose. You also need to swing forward more than up. you are not lifting the ball as much...
...when you let ball drop below table, you obviously need to lift the ball more.
Blocking a heavy slow loop that lands just after the net is very tough, as it is very difficult to get the bat near the bounce, so it requires a LOT more touch.
Blocking a slow loop that lands deep is MUCH easier as you can easily get the bat near the bounce.
Still, many amateur players do not do well blocking a heavy slow loop. Even many 2300-2400 USATT rated players (that gets you to crack into the top 2% of US players) struggle to counter a slow/heavy loop and land it over 50% even if it is practice and they KNOW where/how the ball is going.
This speaks volumes to the power of being able to slow/heavy loop as an amateur TT player.
Problem is, some opponents simply do not give you many easy balls to slow loop.
When you have time and opportunity, mess around with your grip pressure and how high or low and how forward or upward you swing and see what happens.