Lots of us have commitments and less free time on weekends than we do during the week.  Insomuch as we can arrange a long lunch or phantom "meeting offsite".  Less effective weekends.  
At least that true for me and a couple mongers I know.

I am normally pursuing other interests on the weekend.

I personally have more bookings during the week. Sunday's tend to be my slowest day. Like a couple people mentioned, it can be easier for some guys to book during the week since work & other things make it easier to explain why they aren't home by a certain time. As for touring, I would recommend shorter tours (2-3 days) unless you have enough confirmed bookings to extend your tour.

Being a client who's single, I prefer weekend appointments, as the traffic is less hectic and I have fewer outside commitments to fulfill, but I discover that a majority of the local ladies and most of the touring ones are unavailable or don't take appointments for the weekend. Also, my guess is that Mondays and maybe Tuesdays are not good for guys who have office jobs.

Thanks for sharing your thoughts. I haven’t had any “wasted” days, and I definitely still did better extending here than being home, of late. The last week and first week of the month in St. Louis have become almost useless. So I’m still thrilled to have extended my tour. But o definitely need to learn the finer points of touring!

Unless I myself am traveling (meeting friends  for a few days of guys only golf) I only hobby on weekDAYS while home for the very reasons tue gents above have mentioned