You should post this on the WWFF-KFF Facebook page and you will get a bunch of responses as many seem to do it their own way. Many people prefer the free FLE software which has a template for WWFF. I could never get the hang of that so I use Amateur Contact Log by N3FJP. I also modify the screen layout and add the fields for WWFF and P2P calls. Their is a tutorial for that in the Files section of the WWFF-KFF Facebook page.
FLE is popular because it is free (ACL is $25 for all lifetime updates) and because it puts out a basic ADIF that fulfills the WWFF log expectations. I think you still have to add the files for P2P but I am not sure. If you are interested in FLE I recommend you contact KA9JAC. His email is on the WWFF-KFF.org page as one of the upload people.
These are just a few that are used out there.