You don't need extra heat to keep the line above the ground open. You do need proper installation to prevent the supply line underneath the drinker from freezing. Second, our supply line is in the water.
STOCK# M04242 Cat1 Hitch, 60" working width, 7 Forward up to 45 degree angle/position, 30 No. of Teeth, 2" Centers, High Carbon Spring Steel, 5/16"x1" Tooth Size, 16'1/2" Rake Height,