Thanks again David, yes a friend of mine used a loop perch to good effect. I have just revamped my raptor post, they work well, but the only down side is that they can't get down to bathe etc. I bought a Gos with bad feather damage on tail and primary tips, she's moulting out well now. Just exploring different methods of tethering for when I reclaim her from the moult. I don't think that any one method is perfect for every bird, its trial and error. What works for one hawk may not work for another. I have been speaking to some of the US Gos men and they all swear by the Meng tail saver perch.