I'm alittle bit kind of opposite, as op did mention about the opponent using the pip out without sponge, which is what we call hardbat actually, these kind of bat has a very low bounce compare to the regular rubber. If you try to vary your ball strength alittle, some times make the ball long and soft, the opponent will hit the ball into net.
But usually what we need to notice is that many of the time the pip does not only create spin, but it will make your spinned ball more spinny. I recall there was a website teaching you all about this fundamental knowledge on the pip-out rubber.
Pips do not add spin to your ball. They cannot. What comes back is usually what you put on it, but in reverse. If you hit topspin and the spin does not change, it comes back underspin because the ball has changed direction but the spin has not. But it comes back with a little less because the ball has contacted a rubber with very little friction but with some friction. So there is less spin than your original spin.
But, the main statement is, the more you play against it, the more you get used to it.
...pip out without sponge, which is what we call hardbat actually...
I am struggling in dealing with pimples (long, no sponge)
And Hardbat which is short pips with no sponge is different than long pips with no sponge. Long pips with no sponge is long pips with no sponge. They are very different. And often, a player who has long pips and no sponge on one side will have smooth rubber with sponge on the other side.
Either way though, the more topspin you give them, whether hardhat, or long pips, the the more challenging it will be for them to keep it on the table and the less they will be able to do with the ball. Your topspin becomes their underpin. You can spin them off the table or they will often give you an easy shot to kill if you are spinning the ball heavy and they are keeping it on the table.
If you give long pips underspin, they can attack it because their shot will automatically be topspin.
And once again, the real information is, the more you play against that rubber, the more you get used to it and just start knowing what to do. If you are thinking about what you are supposed to do, it does not work as well as if it is just based on you knowing what to do from experience. So muscle memory takes over and you just do what you are supposed to. Just like against smooth rubber, at a certain point third ball attack is just ingrained.