I used to drive myself nuts with heat tape and sensors. To many failure points (at least in my head). Always checking and rechecking. I'm the kind of person who will check and make sure the oven is off in the middle of the night. If you are going to use heat tape, I would run another thermostat and probe inline so that one is a fail safe for the other. I don't deal with that craziness anymore other than in my isolation rack. I am now running ambient and it is a lot easier to figure out if something is wrong.
I wouldn't trust hot glue for anything other than decoration.
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