When I was fishing with a hand line I used to manufacture 'winders'. These units keep the line neat and organized and give you a good way to pull on the line without taking the flesh off of water softened hands.

These could be as simple a scrap bit of 1/4" plywood cut into a rectangle 6" or 8" long by 3" or 4" wide. You wind the line lengthwise. You can start by catching the end under a wrap if you don't mind the line running off the winder completely. I used to use the awl on my SAK to bore a hole, thread the line through and knot with figure eight knot to keep the line attached. The line stays on the winder more reliably if you dish out the end a bit so the line doesn't slide off. Add a shallow saw cut on each end and you can run the end of the line into the cut to hold it but it is almost as easy to pull the line twice under the last wrap.

If I was feeling like going fancy I would cut the board wider so there was room for an elongated hand hole grip and a slightly longer bar near the handle so I could catch the line with it and really have a good grip for fighting the bigger fish. More likely a stump.

I've also made ugly but workable winders out of a tin can, plastic bottles or a stick.

Winders are a handy bit of kit. Fairly light and compact they serve many purposes well. Carrying a wooden one means you always have a bit seasoned wood that isn't waterlogged and a flat surface you can get to if you really need one. I once split a winder several times to make tent stakes when the stakes I had weren't enough to deal with the wind and there was no usable wood smaller than a 10" diameter tree. You never know when a small piece of flat, dry, sturdy wood might come in handy.