Why even bother grading a review when 80% of the reviews say the same exact thing?
Maybe you won't grade it. There is no rule that you have to give any particular review a thumb. Many people do, though. There were a lot of Flip City reviews when I wrote mine, but lots of people still thumbed it.
Along the same line, what incentive is there to review a course with umpteen reviews…like a top 10 course with 100 reviews?
Sure it's nice to pump up the stats, but its basically the same info over and over and over....and over.
The key word is basically. If you think that all the other reviews say the same thing, focus on something else, or provide some points supporting where you disagree with the conventional wisdom on aspects of the course.
Also, I would say the potential to get tons of thumbs up for a single review is a good incentive. Write a review about a top 10 course, and you are guaranteed to get tons of thumbs. Write it well and those will be thumbs up. My Flip City review has 30+ thumbs, mostly up. Worth the effort, for sure.
I may want to give a course a score of 0-5 discs, but if I don't write a novel, the review will get all thumbs down.
It sounds like you have an aversion to writing. If you don't want to put forth the "effort" to write a review, fine, but you should stop the whining.
I wrote 330 words on Crystal Mountain (that is less than a 1 1/2 double spaced pages - or about three times longer than your post here) and had 90% thumbs up (9 out of 10). Hardly a novel. I also gave it a 1/2 Disc rating, btw.
Just give cursory descriptions of all the things any course has (tees, baskets, par, distance, elevation, number of holes) separating the good from the bad as you do. Add in any special extras the course has/lacks, and add a few "other thoughts" about the round(s) you experienced. This will flush a review out plenty to avoid most thumbs down, and boom goes the dynamite, you are done.
If you employ English properly, and are kind enough to use punctuation and paragraphing, the thumbs up will come your way. If a course deserves a 0 out of 5 Disc rating, it shouldn't be hard to describe why.
Most reviews that have tons of thumbs down fail to do these simple steps and generally have 3 sentences per section or fewer. If a novel has only 9 sentences, I guarantee it sucks.