Well, depending on if you have only 1 FS section or multiple, there's a couple ways you can do it, but both require editing your postbit template and using some conditionals. Also someone asked about specific user groups so I'll include those too:
Here's some examples (note, this code will be included with 1.1.0):
For specific member group (or sub-group):
PHP Code:
<if condition="is_member_of($post, 11)">
(trader ratings row)
</if>
For specific forum section:
PHP Code:
<if condition="$thread[forumid] == 200">
(trader ratings row)
</if>
For multiple forum sections:
PHP Code:
<if condition="in_array($thread[forumid],array(200,201))">
(trader ratings row)
</if>
Combining the two together:
PHP Code:
<if condition="is_member_of($post, 11) && in_array($thread[forumid],array(200,201))">
(trader ratings row)
</if>
Hope that helps out... FYI, I'm still coding the upgrade script for 1.1.0. Should be up soon though.