SOCOM: U.S. Navy SEALs Cheats

Hide in plain sight
1.Always stay in the prone position(crawl).
2.Use the surrounding foliage(trees, grass, etc.)as cover. Remember the thicker the better.
3.With all these steps in mind, plus camos, the enemy should just stroll right past you.

(HINT: These tips work better with online play. The single player enemy AI is smarter than an actual human.)