I was wondering if there is an easy way to make an alt account on IOS?
Well you can traditionally make a new Game Center account and log out of your current Game Center account via settings. However if you want to swiftly switch back and forth between accounts I suggest making a Facebook account and linking it with the account you want.
Unfortunately there is no easy way. You need to reset your iOS device and create a new Apple ID.
-- Makarov Dreyar