Thanks guys, good points all around. I should say that if I can pass the test, anyone should be able to, it's multiple choice common sense stuff. I made it on my first try with only two wrong, and one of those was poorly worded.
The way I see it, it should increase boater safety in two ways:
1) People will study as much as they can and learn as much as they can, because they will expect it to be tough. It isn't, but at least they will have a head full of good information.
2) Many will be too scared of the test or won't be bothered, so they won't go out. Fewer boaters = fewer dingbats.