Most people will agree tape is a bad idea. BP + stuck tape = bad news

Some suggest using epoxy or hot glue. You need some way to keep the probe down. Even if you've never had an issue with burrowing, it's bound to happen sooner or later, and if the probe gets moved it could cause a dangerous overheating situation.

I've seen many of the same threads in the past, do a search and you'll find everything you want to know