Yes, I confirm you may fly into an angel flight programs (
more info if you like to join them) with just a P.P.L., they look for people with your qualifications every single day.
They normally prefer aircrafts owner but those without an airplane are welcome too.
look in
wikipedia and there will be a list of the association closer to your city, and have a look into wiki too for shark patrol or fire fighting. You will find something...