Higgi,
As Alan says, you can add groups to your font list.
Click the Font Detective ‘F’ at top left of the SL screen, that opens a small window, click ‘options’ in the group line and then ‘add group’. Add your new group name ie Really Bad fonts and select the ‘which is initially empty’ radio button. Click ok. Back at the group line in the Font Detective window again select options, with your new group highlighted in the list to the left, and select ‘edit group’ this last window (group editor)will give you hours of fun while you select those fonts to transfer to your new group……. Best of Luck!
Steve
PS I’ve just created some pics of the windows involved but I can’t upload them here – pm me if you want them