Creating subclass vc extending class

I have list of resort items.

I have class Resort that stores that items.

Now I need to add opportunity to that class to have one resort as active.

So I will save that resort to UserDefaults.

I will need method 'save', 'load', 'check if current resort is active'.

So, should I extend Resort class for that methods and properties or the better way is to create Class ActiveResort ?