The point of this thread is somebody asking for experience with Wimberley, Jobu or Mongoose products for use with long glass - Arcatech wasn't actually mentioned. I have a wimberley side kick on a 500mm - this meets the context of the thread.
I'm not trying to pick at your gear but you chimed in and said that you use this even though it doesnt meet the context of the thread. If you don't want a suggestion critically examined then why post the details. Just because I haven't laid out the dollars to buy this product doesn't mean I can't critically assess how it will operate, FFS it a simple hinged head - it aint rocket science. I did give you the opportunity to tell me something about it which may not have been apparent - but now you state its no different to a ball head. Why get your pants in a knot.