Welcome to the forum!! Hope you find what you came for.
I have to echo the line diameter for retrieving and handling. I went with 250' of 3/8 because that's what they say is sufficient for a little boat, but boy is it hard to pull in because the diameter is so small. I would have been much happier with 7/16 or 1/2.
I run about 30' of 1/4 chain, the more chain the better, it helps create a horizontal pull on the anchor.
The downside of all this line is once everything is piled in there I have to dig a hole to fit the shank of the anchor down into or it won't hang on it's mounts to shut the flap door. It is kind of a hassle, thicker line would be even worse. I think I went oversize on the anchor too, I'm pretty sure it's a 18, and I had to cut off and inch or so off the end of each rod the flukes are welded to in order to get it to fit down into the compartment.
My last boat had 300' of 5/8" chain, but she was 24K pounds :wink: and it had an electric windless. Geez thats a lot of weight in the eyes of a boat!
Another consideration for anchor rode as well as docklines: nylon 3-strand is nice and stretchy, helpfull for both applications. Dacron braid doesn't really stretch at all. When it comes taught it will jarr severely, and can even pull anchors and cleats loose. I'm always appalled at what they're selling at the chandleries (WM and BW) for dock lines. They should be ashamed. Besides, 3-strand is a helluva lot easier to splice, I never did figure out how to do dacron braid. Dacron braid is for halyards and sheets on a sailboat, doesn't belong on a motor boat.