There are really 2 schools of thought among shoppers about "competition," and the "dangers" of sharing much information about what shops they value the most. Moreover, it may be that Flash's backyard is full of retirees and/or snowbirds who really are a huge source of competition in much of Florida. Reimbursed dining, grocery, oil change and other shops can have a half-life of a nano-second in such markets.
However, once a shopper has gained a reputation for reliable, objective, on time reporting and begins to move up the ladder of MS opportunities, many find it much easier to find well paid shops and/or more interesting shops.
One way to discover what you like is to try several genres of shops: fast food, fast casual dining, banking, cell phone and grocery shops come to mind, plus, of course, oil changes, hair cuts, etc. All good starting points. Ironically, a few of the huge MSCs that have good shops for beginners to learn their craft also have little to offer in terms of an upward ladder.
My advice would be to ask, for instance, "Who has a lot of fast casual shops"" If you ask who has them in, say, Denver, established Denver shoppers may hold back, and non-Denver shoppers won't know. Plenty of forum members will answer the latter form of the question, though.
Finally, test out the forum's search function. Try a search on "bank" for "past 12 months". That will turn up a ton or comments that reveal what MSCs do banks (as well as a bunch of comments about pay by direct deposit, but it a worthwhile endeavor for a newbie.
Based in MD, near DC
Shopping from the Carolinas to New York
Have video cam; will travel
Poor customer service? Don't get mad; get video.