So for some reason my masthead light is a tri colour only with no anchor light incorporated, and due to things being a bit tight with some apparent wiring tangles inside the mast I can't run a new wire up inside to add the anchor light and obviously not keen to pull the mast out before time just to add a light. So was considering trying one of these guys or similar. Still not quite sure how to mount it to ensure all round visibility but has anyone used one and if so are they any good? Any recommended alternatives?

www.ebay.com.au/itm/Navigation-Light-Solar-Wind-Charged-360-Degree-Anchor-Light-All-Round-White-/252845325332

At at the moment I just use one of those cheapo plastic clamp on ones but it's not really sturdy enough to mount anywhere and bloody annoying to put up and pull down every night...