I like hairspray because it is so simple to do. At first, I've bought "Chipping effect" fluid. But it needs to be sprayed via airbrush, so less work is to take can of hairspray. After masking to leave just the deck for painting, I've sprayed one layer of hairspray, over dark brown "Chipping" colour base, waited a moment to dry and then second layer. When dry - thin layer of Tamiya Acrylic. You can even modulate a bit. I've thinned Tamiya paint with IPA for fast drying, no retarder. In a few minutes paint was dry, so I took some water on a brush and started scraping, it was really fast process, I think that cleaning the AB took longer. After all the chipping You have to leave that haispray layer along with wet paint to dry and coat with some varnish. Nothing will chip later, no worries.
I am rather not using hairspray technique over entire models in 1/72, I do chips by hand. But done selective on large areas it is very satisfying process.