Jari has been developing the ball-raced gooseneck idea. For round booms (and maybe the Sails ETC booms too) there is now a typical 'tang' at the top. Using a rigid compression strut for the kicking strap seems to be questionable under the current rules, so here's a more conventional kicking strap based on a piece of stainless M4 thread, a threaded stainless cylindrical sleeve, and a piece of stainless wire with a 'blob' on the end which keeps it attached to the sleeve. There will be a thumb-wheel on the final version instead of the nut seen above, and probably also fixing-screws for attaching the fitting rigidly to the mast. Jari thinks these fittings could be sold for 60euros each (including all parts and the bearings).