I agree that the Seismic and Surveying exams are difficult for those who've never taken a formal college class; however, it is possible to pass the first time around for both. I recommend starting to study at least 4 months prior to the exam. It's like training for a marathon and not ever have ran one before; it's not something you can pick up easily unless you already have that ability.
I took Hiner's class and it was helpful, but overrated. He's a great teacher and engineer, but he's on cruise control with his lectures and workbook material. The seismic exam is all about the building code and knowing where to find numbers to use in equations. It's also about the fundamentals of seismic design. This is why structural engineers ace the exam because their work is more complex than the exam problems. For the price of Hiner's class, the syllabus should be more focused on problem-oriented questions rather than theory. I imagine that most people learn quicker by solving problems and will get the most for their money that way.
As for surveying, if you're taking all 3 exams to get your PE, then your brain is mush about halfway through the exam. Many of the answers are very close in values so a best guess may not be as rewarding as the general exam. Of the 3 exams, this one was the most stressful simply because of time limits. The content is reasonable, but with only 3 minutes a question on average, it truly seperates those who studied and those who didn't.
The Seismic and Surveying exams are not as forgiving as the general exam. You have only 3 minutes a question and no time to really find things unless you know exactly where they are in your books. There's no trick to these exams other than STUDY, STUDY and STUDY! Again, if the material is brand new to you, give yourself at least 4 months and chip away at it about an hour or so every night. For those who have some seismic and surveying experience or education, then start studying about 2 months prior to the exam to get rid of the rust. These exams are not easy for the average test-taker and shouldn't be approached as such by anyone.