Just exactly what do you do that is SO great and SO easy and SO sure that its better then to simply put the probe where it belongs. Right on top (or bottom if secured right) of the UTH. And is your animals safety worth that ?
You're putting words in my mouth that I never said. It's an option. It's not terribly dangerous. I haven't had the probe set up like this but for a few months, but it's knowledge of how heat transfers that tells me it wouldn't cause a dangerous temperature spike.