Free: Contests & Raffles.
Taco nailed it! Go with his advise.
Zero at 100 and dial up for everything. It kind of defeats the purpose of having a dial if you are aren't going to use it and either hold off or settle for a shot that hits somewhere else.
You just aim right on. What are you shooting? With a 200 yard zero on my rifles I'm only 1.2-1.7 high at 100. On big game, who cares. If you really need to just aim a tiny bit low.