1) Charge to 25 psi & invert in a tub of water
2) Yes, I've got 9 of them in my conditioning cabinet.
3) 6-7 feet of 3/16th is a good start.
Remember one unassailable statistic, as explained by the late, great George Carlin: "Just think of how stupid the average person is, and then realize half of them are even stupider!"
"I would like to die on Mars, just not on impact." Elon Musk