Of the 10+ clinics I've emailed, I have only gotten responses from two.
I would definitely recommend phone calls/dropping by. My first observation experience fell into my lap (and was so positive that it convinced me to go back to school for PT). But I needed to pick up experience in a different setting for my applications. I thought it would be a piece of cake. I was wrong.
There were many unreturned emails/voicemails to various facilities. I finally got additional experience in a local hospital, but that required significant follow-up with the volunteer coordinator. After unreturned emails and phone calls, I showed up in person and was directed to go home, fill out a form on their website, and wait two weeks. I noted that I'd filled it out two months prior. The coordinator went and confirmed I was in their system and scheduled me for orientation.
So more time ticks by before one of their seasonal orientations (aside: 90% of the people there were doulas-in-training...has anyone else had this experience?). I fill out a bunch of paperwork, then pay to have them do blood work to demonstrate my various immunities. More time passes.
Once all my information has cleared, I needed to schedule a time slot. So I sit down with the coordinator and talk about some possibilities, she says she'll get back to me later that week. Weeks pass, I email, nothing. Weeks pass, I call and get greeted with "Oh, can you start this Friday?" So that was my experience.
I'm deeply appreciative of the hospital for giving me the opportunity to volunteer. Frankly, I'm shocked that the PTs there have been so kind and helpful to some stranger off the street. Also, as I have a clearer sense of how overworked the volunteer coordinator is, she now has my deep sympathy and appreciation.
But it was incredibly frustrating to jump through that particular hoop. I'm surprised that this forum hasn't had more people asking this same question.