Any chance you guys running this site could implement the Tapatalk plugin?  If you can't figure out how to do that maybe update the YaBB software to a version that is more recent so you can make the site responsive?  It is very hard to use the site on mobile.  The Tapatalk is simple to add to a forum, I have done it hundreds of times as a developer.  If you guys aren't programmers and you need help let me know.  YaBB is very dated, but there are plugins to help with the lack of development with their software.