How do you put in 00 double flared gauges?

Unless your gauge is already 00 you shouldn't try it. When I had my ears gauged, I couldn't put in any flared gauges unless I was already stretched above the size of the jewelry I was putting in, but my ears seem to be harder to gauge than most. You might use Triple antibiotic ointment to make it a bit easier to slip in, or gauge up just a bit by raping your usual 00 tapers or crescents with (I know this sounds weird, but this is what Ive heard) bondage tape to slowly increase the size until the flared gauges are easier to put in.