Here’s my two-cents-worth about docking. Although the CR38 is notably heavier than the 34, they have nearly the same underbody shape and behave in much the same fashion. I dock our 34 singlehanded multiple times every year. We’re in a tiny harbor with minimal turning space, narrow slips, and I get one shot at doing it right, or things quickly turn to pandemonium (a.k.a. harbor entertainment).
The technique I use is similar to what has been described by Larry, Bill, et al. with a couple of exceptions. Rather than a fixed length of line or a loop, I use 20’ spring-line that's one size smaller diameter (for ease of handling) than our dock lines. This line is made fast to a (movable) cleat on the genoa car track atop the caprail, just aft of the cabin bulkhead on our 34. The position of the cleat is important and I explain below how to locate the cleat. When I bring the boat alongside the dock, I use reverse gear to stop the forward motion with the "target" dock cleat and the caprail cleat side-by side and the boat as close as possible to the dock. Once completely stopped, I immediately put the engine back in forward, at very low RPM, or idle if there’s no wind, and step off the boat onto the dock with spring-line in hand, tying it to the dock cleat while pulling it up tight. As the boat begins to make way forward, it snugs itself tightly to the dock and will sit there all day if necessary. I ease the spring-line with engine still in fwd until the boat is aligned where I want it, then I tie a bow line, stern line, additional spring, whatever. Done, now shut off the engine.
To locate the movable cleat on the rail once you have installed it, choose a day with a breeze blowing you off the dock, so you can see what effect a contrary wind will have. Start by guessing at a spot where you think the boat will draw up properly to the dock, around 1/4-1/3 of the way forward from the stern, and locate the cleat there. Make a line fast between your target-dock-cleat and your moveable one with a couple of feet of slack, then put the boat in forward. Ease the bow and stern lines but don’t untie them. If your boat starts to twist bow in to the dock, your cleat will have to be moved aft and vice versa. Once you find the sweet spot, remember it, or make a mark so you can always return the movable cleat there. Experiment with different engine RPMs for various wind conditions until you are confident you have it right.
Fortunately when undocking, which can be even more panic inducing in our tiny harbor, I can usually find a willing dock hand. But if necessary this technique can be reversed to leave the dock — engine in fwd with docking spring in place (looped over the dock cleat for ease of casting off from the cockpit), untie all other lines, boat remains in place, put engine in neutral, cast off docking spring, reverse and go.
We’ve been using this single line docking method for a couple of decades or more — it has worked well for every boat on which we’ve tried the technique. We use it even when docking with a crew because there’s no confusion. As soon as you have the spring line in place, all is calm, life is good.
Cheers
Dave