My client was a concrete polisher who had been in business for 25+ years avg. $400,000 a year with a small crew of 3 people. He had been taking any job he could East of the Mississippi without a vacation the entire time. I asked him if he was able to spend $3,000 for 90 days and earn that back to start would he be open to a test. After our initial tests, he was able to break even but with those tests and given a good amount of time we knew the changes to make. The next 90 days we were able to AB test, and get a 30% return on profit. Each week we asked new questions like targeting? Does he need to target the entire east coast? What if we focus on just New England? Instead of spreading that money thin, just throw it all just in New England. These sorts of changes and tests increased in brigning him from $400,000 the year before to a few million a year after. Slow testing, while isn't as much fun as it is slow results, in the long run means higher return.