An easy way to get 5 star managers is to save your game just before defeating a Rival Store, then reloading the save until you get a manager of your choice.
[Cheat] - This goes the same when you are hiring new staff.
[Cheat] - This also goes the same when treasure hunting.(get different things from the boxes/bags at the end of a hunt)
[Bug] - Customers can sometimes enter and buy things from your shop even when it has not opened.
[Bug] - If you installed the bike rack, and customers come in bikes, they ALWAYS WILL leave without their bikes. (you can "remove" the bikes by panning your FOV out of the bike rack/ changing stores/ bringing up a menu and it should disappear.)
[Bug] - [V-1.0.7] - Your game could crash just by shaking your device.