Thanks for the cool visual, C'Pete.
Is there any further discussion here?
We see two alternatives for spring lines.
I favor the first example because very often you don't have the one or two dock cleats as diagramed. (And the springs would be too long if taken to the dock's bow and stern cleats.)
If I saw a sailboat tied up as shown in the second example, I would be looking at a temporary solution, as I imagine one line is tied off to a sheet winch at the cockpit and another to maybe a shroud plate or turnbuckle. Right?
Also, what is happening to the spring lines as they cross at the rail? Here would I mount a chock rather than a cleat? Don't know that a line friendly chock is available that would take even one line at a fair angle?
The first example shows what has to be a midship tie-off cleat. Where do we mount such a cleat on the Ariel? On the rail or next to the cabin?
A tie-off point on the rail would take some real installation finesse. An inboard cleat would be a tripper and a cusser. And a midships cleat or chock can run afoul of a rail stanchion.
You have these lay-down and pop-up cleats now, but they would require you make a deep unsightly pocket for them in the middle of the cabin! It looks like a cleat on the rail is the only option?
Be great to see a photo if somebody has figured this out.
Anybody have an idea, or more?