The thought of using cams has crossed my mind a time or two, but I have avoided them for a couple of reasons. The first being the weight of the cams. They are normally made from steel and are pretty heavy as compared to ring buckles or cinch buckles. The main reason is that I have yet to see a cam with a working load higher that 300-400 lbs. I just don't think that is enough for a hammock suspension.
“Light thinks it travels faster than anything but it is wrong. No matter how fast light travels, it finds the darkness has always got there first, and is waiting for it."