Sinclue
OK disagree with me, I can't force you to be right
Can you cite your source for this info please? I was under the impression that all that was necessary was an airtight "seal" between the HT and the Cloud base, and that it didn't matter whether the HT "rested" on the metal platform or not.
Can't speak to the "necessary" or not, but both my ShowerDome and my HydraLine HTs do not contact the metal. Even inverted on my Mobius Ion it doesn't contact the metal. All seal well too.