PILAPT tests your coordination skills, but they do not give a full indication of whether you are suitable or not to be a pilot. They don't measure the determination of a person to suceed. Many people have failed PILAPT but have become successful pilots. PILAPT is not foolproof!
These tests were never meant to be practiced. They are supposed to put you on the spot and see what you can do. If you perform reasonably well you should be accepted, but I suppose it is human nature to try to get ahead of the rest. Remember, most schools running these tests don't expect perfect scores, but expect you to show your NATURAL skills and ability to adapt to a situation.
On the other hand, buying these tests show initiative and determination, so what can I say.........???