I think the weight I used might have been a 3/8" ball bearing with a hole thru it rather then a fishing weight. I had some, but must have thrown them out when cleaning one day. I no longer own the AT. Sorry I can't help much more. Maybe you have a better idea, but could start with this one and improve on it.
I had a dead-man weight (like on Pro-ject, others) turntable on my Empire that worked pretty good too, but then I discovered that if I cranked the arm assembly more to the outboard side, it would stretch the anti-skate spring better (it had stretched over the years) and would behave acceptably, so I removed my dead-man.
Here is a dead-man on a Marantz table:

Here is the one on my Empire:

Wayner