Since my household has gone GF, I don't make a lot ot things that require flour. I substitute cornstarch for the flour when I need a thickener. If something needs to be "dusted" in flour before cooking, I use Bob's Red Mill or GF Bisquick (love it!)
Thank goodness for the new GF products that have arrived on the market in the last few years. Our house had to go GF about 8 years ago and some of the original GF products were awful.