My previous post below from another thread; and I just started doing SP work again after a long layoff, that will be posted shortly.
I was steered at SP work originally by a bodybuilder, who was getting paid to let groups of new med students practice giving complete physicals; they practiced auscultation, gave him DREs and testicular exams (U of Minn, '80s.) I offered to volunteer initially, was informed that all schools paid their SPs - GU and testicular ultrasound sessions paid well in my experience.
"As I mentioned, almost every medical school in California and Arizona uses SP's, several advertise periodically for new SP's to apply (UCLA is generally looking, older males and minorities especially.) The training tended not to be too strenuous, MOST but not all didn't require too much depth - be able to read a case and remember it consistently (You are Mr. X, have a fever and feeling of pressure in the middle of your chest/back, are/are not feeling nauseated, pain/no pain in arm or fingers. Drink moderately, office job, married 23 years with 2 kids, etc.) Generally just answer the questions they posed, don't volunteer anything extra - make them scratch their heads and figure your diagnosis out.
I preferred the GU workshops - being a warm body was no challenge, and I enjoyed the anticipation - sitting and waiting on the exam table for the next group of 20-somethings, feeling the cool exam paper crinkling under my bare butt where the gown doesn't quite meet and looking at the boxes of S thru XL exam gloves and GUAIAC cards at my elbow. Wondering who'd have the smallest fingers, AND biggest; and which ones would bring me up on my toes during the prostate exam (generally the moose with the biggest finger) as they made the plunge. Who'd faint, as happens occasionally (never to me, but several other TA's had stories).
Was good while it lasted, enjoyed the students and their energy, and the campuses are a nice environment. A SMALL part of the reason I stopped doing it was fear of being naked and meeting former students, especially in a GU session - someone who got a D in Visual Basic, and wanted to examine my prostate up to their elbow. Awkward to be face-to-face (well, ass-to-face) after hectoring them as a student in a technology class."