just a general rule of thumb on the hose, if its a 2 and a half inch line, at least 2-3 guys on the line... for residential fires, generally, most departments will use several 1.5 inch lines on two man crews... that is at least how they do ti down here... Obviously, in our case, unless you have the structural safety gear to fight a fire actively, your basically going to be spraying water into the structure from windows... It would also be advisable to practice with the equipment you have to be proficient in it... Make sure you aren't over pressurizing your pump, etc.