If people have looted guns by the time you're hitting the ground, hasn't it occurred to you that they are doing something different to you? They are clearly better at landing location choice, timing and controlling the free fall. After practicing, I am almost at always the first to the ground. This is because I know when to leave the bus, how to dive as quickly as possible, and how far out to aim so that my umbrella will open at a distance at which I can glide down to rooftops from. You need to press W and angle towards the area you want to land at, but not aim up too high that you stop falling as fast. When your glider deploys, survey the area and go for the guns on rooftops @ retail row (best place to learn J think). Yeah you'll get killed quite a bit, but once you learn where the chests are you'll be able to land right on top of them before anyone else is down, and you'll be that guy popping people as they land.