In my 20 years of irrigation design on CAD systems, I have yet to get any software to correctly size piping on a golf course.  I end up sizing it the old fashioned way (manually) much faster.  Every so often when do a golf course irrigation design (using valve in head rotors of course), I attempt to have the software size the pipe for me, when I have time.  Just the prep work involved with flow zones for each individual fairway, green and tee is time consuming.  The big problem I have though is when I attempt to "size mainline".  Most recently on a smaller 9 hole course, I actually let it attempt to size the mainline overnight.  When I came back to it in the morning it was still on the first pass, it was at something like valve path 11,000 of 18,000.  I quit the process and found most of the pipe was sized, and pretty close to how I would have done it, so maybe it's getting better.  I understand with golf courses it's much more complex thanks to loops within loops within more loops, etc... 

I just want to ask the question, is it normal to be that slow or am I perhaps doing something wrong? 

I'll continue to just size piping on Golf Courses manually for now (I'll always be more comfortable with the manual method anyway), but if there have been any enhancements to the software in regards to golf course irrigation that I'm missing, let me know.  It's been a while since I reviewed the webinar, then again that video is over 3 years old.  It might be a good refresher though...

Thank you!