Loc Line is a coolant delivery line that you can buy at McMasterCarr.
It is sectioned, so you can bend it and manipulate it any way you like, and it will stay in that shape until you move it again.
Just look it up at McMaster Carr. I use it since my fly sparge line is also my HERMS return line.
I don't sprinkle and I get 85% eff... so my method cannot be all bad. Again, sprinkling water on water, seems, silly to me. I used to have a sparge arm... but I could not use that as my HERMS return line (clogging) so I tried the Loc Line and it has served me well.