We had a super great Phone Sweeps this year from Michigan State University. 390 QSOs es all 80 Sections.  With only NWT to go, we used our "secret weapon", Hanna KD8OKM. There's something magical about the female voice. It's like adding 10 db to your signal. The guys can "call es call" till their out of breath. But the sound of a female voice,  Best way to "crack" a pile-up. Sure did work for us here at MSU.
this pix shows from front to rear, Hanna KD8OKM, Scott KB8VWM , Mike KB8ZGL, es Andrew KE7ESD in the W8SH shack.