Here are some "emergency" measures to take:
Drive thru fast food place (cleaners, convenience store, or ??), place order and then have to park short distance away:
(1) If in "work clothes", grab a rag or your mechanic's red rag and drape it over the gun with corner stuck in belt.
(2) If in leisure clothes, grab a towel, large rag, or similar and wrap around your waist and tie know in front.
(3) If out walking, jogging, etc., tie one of those 1980's or 1990's sweaters or such with the long sleeves around waist.
Other places, whether "in season weather or not" for a brief exposure in public:
(1) Keep a light weight vest (no lining or heavy fabric) in your vehicle to throw on quickly (people won't notice if your "public" exposure is brief).
(2) Also, #1,2,3 above.
(3) If you have infants, keep diaper bag with you and hang over the handgun.
Other suggestions:
Obviously, don't put on a Western "duster", "hoodie" or trench coat in summer and go into a business...
Keep wallet in easy to reach front pocket of shirt or vest to avoid having to reach in hip pocket or front pant's pocket.
Always, if possible, dress "in season" so as to not attract attention.
If you are OLD, you can get away with wearing a vest (down or other filled) briefly because you "look cold"...works best in mornings or evenings in summer.
If you are a "Sailer", wear your yacht cap and a windbreaker...lol.
On a final note, many have said that MOST people don't pay that much attention to you anyway and usually look at you fron chest up...if they look at you at all...
Good one. Is that what you did your Wallywalk in?