Well man I have never try floating actually, but I think I would probably try something similar in order to see how it feels haha!
I know sometimes we really need to some time and put our brains in some sort of hibernation mode in order to recharge our energies :) . What I usually do is to simply relax in bed, but perhaps trying more sophisticated technique could be better.
Cheers mate!
If you get a chance test it out, bed is always nice too, bed stretching in the morning is amazing