Setting Anti-Skate on VPI Fatboy Tonearm

Other than being able to do it without a grooveless record? Its not.

I don't have that arm, and can't find good enough pictures to figure it out exactly. What I can see the line comes off the back end of the arm and goes over a pulley, probably to a weight. The only way of adjusting something like this will be to change the weight, or the attachment point on the arm. Which looks to be fixed. So its the weight. Do they have different weights?

You're doing it correctly. You're right. It is an utter joke. Not that it matters....  

My Origin Live Conqueror uses a similar fishing line with weight. First I would not be terribly concerned about the test record. Its telling you there's not enough anti-skate but if you listen to Peter Ledermann explain about those test records you will understand why this needn't be such a great concern. 

The way to improve the fishing line setup is with a wheel. OL did this on their later arms, the line goes over a wheel which turns more freely and results in a more consistent force. 

But again, if you listen to Ledermann its clear that anti-skate is a static compromise fix of a dynamic problem.  As with so many other things about turntable setup. The correct amount of anti-skate varies constantly depending on the amount of groove modulation. But nobody makes dynamic anti-skate. Instead we use something reasonably close and get on with our lives.

Well, that's what I do anyway....