Paul,

As I said to Bob in the first post, I did not engineer that installation for crash worthiness, just to keep me in the seat during turbulence and aerobatics, but.........

I will check the ends to see if there is enough material to do the last loop as you suggest.  The airplane is on jacks, while the TK-5 main gear struts are being overhauled at Risse Engineering right now, so I don't want to mess around inside to pull the seat pan and look.  Will post another picture after that.

Bob,  will also post a picture with the buckles disconnected, so you can see that too.

Tom