We as UX designers, product specialists, and other folks know how important it is to know your users before designing any products and services for them. To know who they are, what their needs are, their problems, etc. In order to know that we need to conduct a proper research, but... there is often just not enough time, budget or just understanding. Since we believe in research, we need to deal with that issues somehow. Here is when guerilla methods might help. Sometimes you need to win, sometimes you need to cut and sometimes you just need to hide (: