That's how I do it Tony but it needs to be really accurate 'cos when you turn it the drill holes don't line up too well. I have had a favourite swivel for about six months now, the spares I have never feel right - too tight. too loose or just juddery and stick at full extension. I can't believe no one has produced a top quality one yet. I've been asking for two years now. There are a few alternatives out there but nothing as simple as the ball and socket version which has the right threads.