I use halyard hangers like ( Ronstan Utility Hanger (2 Pack) ). They work much better than trying to jam a halyard onto a horn. And while they have bolt holes, I just epoxy them places, all over the cockpit, near winches, ect. For a couple of bucks they make storing coiled lines easy.Look on e-bay. Get a few and polish them.
For those that have cam cleats and line clutches, what exactly do you do with the long tail of line? I was about to replace a horn cleat on my mast, hadn't even thought of that problem.
(sorry for the slight thread drift)