I used to fish trapnets and gillnets(both in open water and under ice cover) as a fisheries research biologist. All our anchor lines and trapnets, as well as their anchor lines were tarred with netcoat. Tarred lines have several advantages: extreme abrasion resistance, zero water absorption, UV degradation protection, and stiffness without breakage in bitter cold weather.
The other suggestion, assuming you are leaning toward running longlines, would be to consider 4" clips, which are still adequate to handle and "work" with gloves on and hang-up less often during setting if you are using dropper lines from each decoy. They also have a slightly lower price point. We use caribeener clips on the ends of our longlines to attach to the anchor eyes. I use a fifteen gallon barn bucket with holes drilled in the bottom for drainage to handline my longlines in and out. IF you can find an electric cord reel that is all metal, they work well also. Again, plastic, like monofilament anchor lines tends to get brittle and crack in cold weather. Top clips are attached to one loop off the bucket handle, bottom clips go on their dedicated loop. Each longline has a piece of reflective red tape attached behind the clip that is marked with the total length of the line. I use shorter lines tight to the boat and landing pocket; longer lines on the stringers that I set to guide birds into the set. You can overcome the "ducks in a row" pattern better with staggered and slightly overlapped short longlines. Pick-up is done in the reverse order as setting...