SailingHarry, I agree. The photo was just to show how I looped the line. In my rather long beginning post I mentioned how I saw first hand how much more stretch 3-strand had than the nylon double braid of the same size. That convinced me to switch to 3-strand this year.
weinie, I've tried just looping them over the deck cleat but the angles appear to be wrong to ensure a slack loop doesn't pop off one of the horns. That close up photo is at a different location than my slip.
I appreciate all the advice and comments.
FWIW, I have used 1/2 and 5/8 .... I like the 1/2 better on my 27. My chafe protection is a 5/8 or 3/4 in garden hose.... The hose will get stiff over time.... but it's very inexpensive to replace. Also I have similar cleat set up on my boat, the bow line will rub the edge and it's hard to keep chafe protection in place there... If you notice a lot.. I would spend the money and get the leather lace on sleeve, maybe even lock stitch it in place. On the stern lines my 1 inch genoa track is a source for serious chafe, so I split a one foot lengths of garden hose length wise and "capped" the track under the line.
The loop over hasn't popped off, mine never have in 15 years... the lines flex with the boat as it bobs and yaws.... but chafe is the big issue. The geometry of the properly sized loop requires that it be turned sideways, then pushed forward (or pulled backward) to lift the loop off one horn then the other. ... Tension on the line keeps the loop long and narrow. Correctly sized eye splices will have the eye diameter a little less than the horn cleat's total length... the only way they will come off is if you lift one side, then the other, like a bone button. But, if you can't get over the insecurity of simply looping them... a short piece of small stuff through the eye with a shoelace bow will work
I don't like braided docklines... I prefer to purchase a coil of 3 strand nylon and build my own ... the three strand eye slice is perhaps the easiest of all the splices.... you can do it with a large Phillips head screwdriver. No tool needed... and a bit of whipping twine. Seal the cut ends with a hot knife, mini-torch, match, lighter etc...