If you go to Vimium options and enter this line into the custom key mappings it should work: map c LinkHints.activateMode action=hover You can change c to

If you go to Vimium options and enter this line into the custom key mappings it should work: map c LinkHints.activateMode action=hover You can change c to whatever key you want to trigger it. It works perhaps less often than I was hoping for, a lot of menus still won't work, presumably because they use JS or something else to trigger the menu.