shibumiseeker
Grandmaster
If you do what shibumiseeker proposes with one of those I forsee it taking multiple separating sessions to get the most true gas that you can, or wasting quite a bit of the gas.
I've not found it taking more than one session to achieve the results I need, and it takes all of about ten minutes to do a gallon. If you have a steady hand you can decant off most of the gasoline, and I'm maybe left with a quart of ethanol-water mixture with an oz or two of gasoline. I throw that on the next brush pile I'm starting to help it along. If I were needing to do larger quantities it's pretty easy to build a separator with a bottom drain for more of a continuous operation, I did that when I first started storing gasoline and didn't have my drums under shelter and the drums would take on water over time. Hasn't been an issue for me for the last 20 years