Good advice.
I have found
this money pouch to work very well in the small-of-the-back position under a tucked shirt. It is very flat and does not print if you don't overstuff it. Once properly adjusted it is quite comfortable. Over the holidays I spent about 22 hours driving while wearing it and I forgot I had it on. I may replace it with a RFID-blocking version.
I like to carry some cash, a second credit card, and a
passport card as a second form of state-approved ID. I fold the cash then secure it in a small ZipLoc bag (for sweat/rain protection) before putting it in the money pouch.