I don't use WWL so I don't know what's involved with it but with WW there are possibilities.
1. Creating multiple WW program folders will allow you to run multiple copies of WW. I don't know if they will add to or over write log files and I suspect they will all use the same set of settings.
2. Creating multiple copies of the WW.exe program, WW1.exe, WW2.exe, etc, in the same install folder, will allow you to run multiple copies of WW. Again I don't know if they will add to or over write log files and I suspect they will all use the same set of settings.
Kinda thinking out loud here. I doubt either of those approaches will help you. However:
3. Creating 2 copies of WW.exe, WW1.exe & WW2.exe, will allow you to run:
Each will have it's own log file, have it's own settings and skins and etc.
This will give you 3 running sets of WW not 5 or 6.
4. To run 5 or 6 copies of WW,
a. In the currently running WW, click on Options
then enable the option to Store user files in the Weather Watcher programs folder
b. Shutdown the running WW.
c. Copy the WW Program Folder 5 times.
d. Dbl click on each of the WW program folder's WW.exe.
You will now have 6 copies of WW running, each with it's own set of Options and log files.
Whether this concept will work with WWL I have no idea.