I happened to be in the eHam CW forum and I came across these CW practice sets. All can be done from the website I'm providing a link to so no need to download programs. One of the segments is for practicing the CWT contest. The speed is adjustable from 15 to 40 wpm. These maybe of value to some members and I like the fact it's teaching to copy CW in one's head and not by typing the answers into the computer or with pad and paper.
Here's the link: