It all depends on the water clarity - otherwise it can be very costly!
Another words if the water is gin clear, I would definitely use fluorocarbon leader instead of mono. Also, you may want to consider heavier than 20 or 30 lb. test rigs because a true doormat will have no problem biting through that line. I?ve use 50 and 60 lb. test with great results.
Also, if you are planning to bucktail for fluke? consider fluorocarbon leaders in the 40lb. test!