When my brother-in-law was getting rid of his 100' extension cord I said I'd take it off his hands. He added it had some kinks, but I wasn't expecting it to be so bad. The cord works fine so I'll likely keep it, but is there any way to straighten it out? Thanks for your suggestions.
Another thing to try is to work on the kinks by whipping the cord up and down while un-twisting it. I have a long cord that has that problem. I'll take it out in the front yard and whip the cord up and down while turning my arm opposite of the twist in the cord. Then I'll pull the cord in and repeat the process. It sometimes takes a couple of passes but it really seems to work well. And doing it on a hot day does make it easier.