With my previous boat and an outboard, I kept lines on the dock and rigged a line at midship on the chainplate that I could step off with. A boat of that size is easy to push/pull manually. My present boat is an inboard and twice as heavy, so I depend on a permanent spring line from the aft dock cleat (coming in frontward) led forward to the midship cleat. I step off, put that line on, get back on and idle forward with the tiller toward the dock, which draws the boat closer and holds it fast against the spring line. From there, it's easy to place all the dock lines. A similar strategy is a loop- one end secured somewhat forward (like shown above, but I don't put mine all the way forward), one end on the aft boat cleat, with enough line to toss over the first cleat encountered on the finger. This does basically the same as the forward spring line I described and may work better for an outboard, since one doesn't need propwash to draw the boat closer. It does, however, require an unencumbered cleat to catch that loop- I would not trust tossing that line around a loop piled high with permanent dock lines.