We have used long lines on BK117s for buckets for years, and I frequently used 50' and 100' lines when slinging. My BK was the first to be used for bambi buckets in 1997, but it took me a couple of years to work up to 100ft lines after which I vastly preferred them to a direct attachment to the hook.
I wouldn't expect the EC145 to be very different from the 117?
Edit: True North have provided their EC-145 to the RFS in NSW for Helitack for some years now, looks like a 50ft line here but I know they use longer.
