Two Hundred Mines = Dead Fleet. How to Overcome?

[Q]

I have the impression, that most of you think mines are to powerful. Well I personally would disagree about that. Sure they are quite efficiant in the early game, but when you have researched mine sweeper component V and dreadnoughts you can easily build a mineweeper, that eliminates 100 mines! If you think about the cost of 100 mines they become quite unattractive in this later stage of the game. So I think it is rather balanced the way it is now.