For one who knows oneself as the spiritual self would have to imagine, or pretend, to experience a no self situation.
Juxtaposed to this I will contradict myself by thinking that on the other hand, a person with no feeling of the self (no experience of the ocean) should benefit from imagining it.
When I reach emptiness and knowing, there really is no option to imagine a self or try to feel out a self. It would be a pretense for me as well. Perhaps one's sense of identity, however it evolved, determines which spiritual path one will follow with confidence, resolve and success. Good luck!