Because you dont just hop from clan to clan trying to get into one. Your goal should be to get into one clan in specific, trying it as hard as you can, and if you get rejected, you don't directly going to the next, because it should be hard for you to let go from your old objective.

That sort of poetic thing. Directly trying to get into one clan after another after getting rejected is also a type of hopping. But it's okay.