I simply don't have enough power for a heat trace system.
doing any kind of Electrical heat would leave me in the dark so fast that my wife would kill me.
Moving the holding tank is not an option either...Oh if it were only that simple!
Uh, heat tapes use very little power (maybe 50 watts or so). Unless you're living off grid, I can't believe you don't have enough power to use one.
Interesting cold weather story: About 25 years ago I was living in MD and for business had to fly to Phoenix, AZ. That winter was particularly cold; when I got to the airport in Baltimore it was -12 F and the wind chill was -58 F. When I stepped off the plane in Phoenix, it was 96 degrees.
He may have moved to Hawaii but for those still in a cold climate with similar problems pyramid a wind row of straw over the line a few feet deep and wide. When Spring gardening season arrives move it to the garden for mulch. As fall arrives again it goes back to the pipe line for freeze protection. If the Moose don't eat it you won't need to re- supply for 2 or 3 years.