I wonder if they “flip” because of their interest in us, or because they have been in that form of business before they went legit, but we came along and became a trusted client, and they can use the money. The person I referred to, while our encounter happened 25 yrs ago, must have gone through the system before going legit. She ha too many skills in too many areas for this to be a first foray into enemy territory! i want to claim it was my seductive charm, but doubt that to be true.
In summary, if I were a betting man and I am not, I would bet that it would be a combination of the connection with the person on the table, good hygiene, as well as the extra bucks. For example, if you do not supply a bit extra in the way of a gift for the "flip" after it takes place, I would bet the next time it might not happen again.