Hey @French Fries,
There is no possible way to hack Clash of clans because it's a server-sided game. Only pro hackers can get to hack a server like this one, that is constantly changing ip addresses. You may want to check out for SQL injections or brute-force attacks on UNIX systems with tools like backtrack, python, nmap or wireshark, which in my opinion is loosing weeks and weeks of work for a game like this… Surveys like those are all fake, they use bit.ly urls and every 10k visitors they get they receive money. This is the same for Hay Day, Boom Beach and all super cell games.
Hope I helped, and you might want to check out imodgame repo on cydia they got some mods for clash of clans but it's far away from getting free stuff