In regards to using Flat Out on the tubes with Presta Valves, it is possible.
Just wrap a little tape so that the hose doesn't slip off.
Electrical tape is what we have used.
It takes a little more patience since the Presta is more narrow.
See attached photo for reference.
Learn more about our test with FlatOut and the other flat prevention tools here: https://youtu.be/-X0y-2AsGRk
Get FlatOut or other flat prevention items here: https://www.amazon.com/shop/boltonebikes?listId=1V900MJRUFM1N