I went today, visited both Canwick's, Swithins and Newport.
Using Findagrave, Newport is quite easy to navigate if you have the plot number.
Canwick New Cemetery is okay, once you get used to the way the plots are in squares.
Canwick Old is difficult, and I had the same as many people, I found only one of 5, but the staff there are really helpful and we had quite a chat. They don't mind helping if you have only a couple of names. I had 25, but as I said to them, I only needed help with The Old Cemetery, and they got the maps out to help. He later came across to the New Cemetery to see how I was getting on, so really nice to help.
David