If you are going to use a hockey puck I would bar Canadians with long sticks from the listening area. The weight depends on the table; something like the VPI can use a very heavy weight, lighter tables might struggle with it. In theory the more weight the better as it should dampen better and increase the flywheel effect of your TT. In practice enough is probably enough; the 3/4s should work well; heavier might be better , possibly not.
