On the one hand, the fireguys usually don't like people messing with their hydrants. On the other hand, it is YOUR house that is on fire, and they ain't there yet. But be advised, a 4" hoseline is a handfull, even for a big guy like you, 100 pushups or not, the first time you are on the end of one, alone. And you for sure want someone else to turn it on while you hang on to the nozzle end. Someone with some upper body strength, some hydrants are hard to open. I would also wonder about the quality of a firehose I got on e-bay. Might blow out the first time pressure hit it...