Kaplan doesn't really give that many tips out for the PAT section. Mostly you gotta practice a lot and learn to raotate 3-D figures in your head. I'll try to give you as much help as possible here:
Angle rankings: compare the angles to 90 and 45 degree angles. Look at the answer choices to know which ones to compare.
Cube counting: Count all of the cubes before answering questions. Make a grid for this and put in the appropriate number of slashes. I count each column one at a time and from back to front. This helps me keep track of which ones I've counted. Do what is easier for you.
Hole puching: Looking at the first folds you can eliminate some answers that are not symmetrical around that line. The one on the DAT is a lot trickier than Kaplan's because the DAT has a lot of weird folds.
TopFrontEnd : Remember that solid lines take precence over dashed ones.
Keyhole : Imagine what the three possible projections from the side, top, and front would look like before you look at the answers.
Pattern folding : This part is harder without Kaplan practice stuff because they help you with the possible shapes they put on the test. Use reference points on these to keep track of the pattern.
This section i much harder in the actual test than Kaplan's stuff so be prepared. Kaplan, however, is better than no practice at all and they help you with the speed part. (90 questions in only 60 minutes).
Hope this helps.
