Well - good news and bad news. The good news - it works. The bad news - I can't get out anymore. I had tried the "O" ring behind the head and one of the plastic travel locks through it but that caused skin irritation. Solution - I bought one of the stainless steel frenum rings from Stockroom and found a 3 mm stainless steel chain on e-bay. I opened up the ring on the end of the chain, slid it over the frenum ring and pinched it closed with pliers. After cutting the chain, I ended up with about 1 1/2 inch of chain hanging down thru the previous hole drilled in the bottom of the 6000. Through the end of the solid link I attached one of the plastic locks. There is enough slack to expand and shrink. Sometimes the chain does not fall down thru the hole so I have to reach thru my pocket and pull but that is no problem. I'm pretty well screwed now - or rather not. Thing is - I was planning on a pierce but don't need to now. Got to be carefull with a bathing suit or shorts on as the plastic tab does hang down and can show. Thats how I got caught trying it out - my lady saw the tag and wanted to see. This was 12 days ago. Now - I could probably slide out of the frenum ring if I had to (wanted to) but no way could I ever get back into it as it only reaches half way up the tube. I'd be guilty without a trial. Ain't worth it.