I intend to leave mine as I will be docking at my own slip behind my house on Barnegat Bay. No other boat will use that slip.
You are making this WAY more complicated than it needs to be. Have your spring lines set in the slip, and marked for easy deployment, drop them onto the appropriate cleat and go about setting the rest of your dock lines. I regularly singlehand a 41' boat into and out of a slip, and having my dock and springs in customary positions is the secret. My neighbors are commercial fishermen and they always singlehand their boats, mostly with 6 or more completely useless hyper passengers who watch their skipper do the job. It is a thing of beauty.Perhaps you can get away with leaving them on the dock if you have a smaller boat, but the more proper way to dock a boat, especially if the winds kicked up blowing into the slip while you're away, is to use one of the lines (spring line, or stern line) to stop and control the boat as it enters the slip (around the back horn, then around the other horn and straight up, let it out, let it out - STOP). You can't do that unless you take them with you and have them attached when returning. And, perhaps you'll need them to get yourself into that transient slip when someone steels your berth while you're away; or into that neighboring harbor when the weather picks up unexpectedly.
Same setup. Custom 3-strand attached to the dock, double braid for travel and doubling up for storms.I asked about dock lines before. My 1st season I bought new double braid pre-sliced dock lines so I could get "pretty ones" (Admiral's request). When doubling up for a storm I noticed that the "double lines" of 3 stand nylon stretched more and gave less a jolt than the DB.
This season I followed Stu's and others advice and bought a length of 3 strand nylon. I spliced in my own eye splices sized to fit the cleats on the boat so they would not easily slip off the cleats. I also cut them to length to fit my slip. Using a spring line and bridle set up in the slip, I slide in, put the OB in forward and just a bit more than idle, to keep from drifting out and can take my time walking around and grabbing the four lines with the hook. No rush and no stepping off the boat to tie up.
also when using some one else's slip and they have line tied to the pilings you should tie below there lines not on top of themDon't know about world-wide practice, but around here if you are short-term in someone else's slip, it is customary you DO NOT use their dock lines. Nada.