Make sure you have arm/knee pads for this, or it might hurt. I dont use em, but my knees are always rug-burned up from the indoor field. You dont wanna "jump" and then land. Basically what you want to do is this:
*off the break run to where you need to go. Dont run high, run low (as always)
*When you get about five feet from the snake, come even lower
*Finally when youre right in front of it, you wanna extent your arm that is holding your gun and dive, not jump foreward (lol you have me practicing this in my living room)
*you wanna land on your forearm kindof with your gun up, so it doesnt hit the ground. Then bring down your other arm and extend it as your sliding and gradually bring down your stomach and legs. You may feel more comfortalbe bringing a leg down with your left arm too.
Sliding really only works with sand, dirt, indoor paintball carpet and grass sometimes. Not good for living room carpets. Im sorry if that sounded kinda confusing but its really hard to explain. Mainly remember that you dont wanna jump, but dive parallel to the ground, really close to the ground rather. And keep out your forearm to break your fall. Try this in stages, dont just go for it, I dont wanna see you in the lounge with a "so I broke my arm diving" title in your thread.
Heres a video that explains it better. Hes not too graceful with it, but you get an idea.
http://www.webdogradio.us/video/tipclip/WDR37hi.wmv