What are your opinions about what length offers the best sensitivity for shaker detection while trolling?

I prefer longer lengths (48" to 56") to make setting easier, but since I have purchased or made longer release lines I think the ability to sense a shaker has decreased. When I used to use 12 to 18", I felt like I could see them better.

Anyone have similar or differing opinions?

I detest dragging shakers around for any period of time, so anything we can do to release them ASAP should be discussed and practiced.