How does one find a professional fiduciary to serve as a Power of Attorney?

Licensed Fiduciaries in my own state are held to the HIGHEST and STRICTEST standards, Chizzle. While they "may" be appointed by courts when there is no family willing or able to handle financial conservatorships, it is not necessarily the only way they are appointed. They can be appointed by a party without family to serve as financial POA.
The one who watched over my brother's ex-partner the last decade of his life was in fact hired by the ex-partner, and he did an exemplary job.

Any Licensed Fiduciary who acts in an illegal manner will be looking at jail time, as this is a profession with some of the highest fiduciary legal standards existing legally imho.

I am uncertain what your own experience is, but I think it may be unusual? And I certainly hope so.
The courts usually demand the highest accounting standards there are for anyone serving in a fiduciary capacity, family or professional.

Rates so vary. Less in Palm Springs area. Just at about 100 to 120 an hour last I checked (albeit about a year ago). (90.00 an hour three years ago for my brother's friend, who maintained that rate until the gentleman's death this year). He used more at time of set up of all bills and so on but in terms of monthly time billed it came to only about an hour a month toward the end when he was in placement and all bills just automatically withdrawn from accounts.

This is a really helpful website. Thank you for referring.

I am setting up an arrangement in which the attorney , who is specialized in elder law, would execute my will which leaves all to one church for specific civic programs: Pay tuitions for practical nurse studies in community collleges, after deducting his fees based on lawyer hours involved in my POA, plus outstanding fees for hours involved of my case by the guardian, the professional that takes over when I would be judged incompetend or disabled by my primary physician plus one more other physician. Mine is an extreme case because I simply have no relative or friends available and must rely on professionals. The involvement of attorney, professional guardian, two physicians and the church, means reasonable expectation of proper execution.