That was always my conundrum. I was worried about moisture getting trapped under it. I think to remedy that I was going to leave open areas under the center console where moisture could evap out.
Other thought, was if all the carpet is out it will be pretty noisy. I thought about getting some house carpeting cushion material for sound deadening.
Last vehicle I took the carpeting out altogether though.
I am way beyond the noise issue, with mudders, rattling exhaust and tools, I found the perfect sound deadening device, the volume knob
I predict future happiness for Americans if they can prevent the government from wasting the labors of the people under the pretense of taking care of them.
Thomas Jefferson