It's only three months until ARRL/RAC Field Day. If you, like me, want to make sure you are prepared to run CW during Field Day, my fork of Morse Walker has Field Day support. Just fill in Section and Class and choose Field Day at the top and you can get some practice.
It's more realistic than the Morse Walker POTA simulation, because it varies the responses. You might hear "R", "RR", "QSL", or "X" before they send their class and section, and after their class and section you might hear "TU", "TNX", "GL", "73", or "72". (And either of those might be omitted since only class and section are required.) This should help the practice be a little more useful for tuning your ears than the POTA simulation which is always exactly "599 ST ST BK"
It's not meant to be accurate (e.g. Canadian calls don't map the call area to the section, and it doesn't implement asking for fills) but it is meant to be useful.







