When you are in vanilla vim search (/), you can use command mode maps, but this is not the case when using easymotion search (<Plug>(easymotion-sn)).

Fixing this would be useful, for example in the following scenario. For searching with easymotion, you have to press enter at the end, but its kinda far from the middle of the keyboard. This could be solved by remapping enter to closer key, for example cnoremap <C-f> <cr>.