Run the line out completely on the reel and reel it back in while spraying line conditioner. The heavier the line the harder it is to completely get the coils out though.
This subject pops up every year when the weather gets cold. Fluorocarbon is fluorocarbon. It is a pain in general. The question you have to ask yourself is, Is it worth it? Do I feel like it helps me catch more fish? Does it give me more confidence? Do I use it because "They" say it helps you catch more fish?
Braid is a pain too but it obviously has no memory. It is way visible. It gets wind knots. It is very difficult to pick out if you backlash.
Mono is a good compromise between the two but it has a lot of stretch. It is more visible in very clear water than Flo. Is still has quite a bit of memory in cold weather but it is 1/5 the price of Flo so you don't feel quite as bad stripping it off and putting on new line every trip so you don't have to deal with the memory.
So to answer the OP's question. You deal with it however you choose to deal with it. You can also tie off the end of it and stretch it a bit before you hit the lake. That helps too. Does it hurt the line to do so? Maybe.. Line conditioner helps.
I fished last Thursday when the high for the day was 37. I had Seaguar Invisx on three reels. I had 15 Big Game on one more. I put new 17 Invisx on one of the reels in the boat right before I started fishing. It was a pleasure to fish with. The other rods and reels. Not so much.
I will add this. If you are throwing a moving bait that you are going to cast out and reel back, the line memory is much easier to deal with than if you are fishing a worm or jig.