How to schedule a repeating rule with no trigger action?

I have 3 different views on my site. I want to set up the following:

Every Monday, check if View #1 has any results. If yes, send an email.
Every morning, check if View #2 has any results. If yes, send an email.
Every hour, check if View #3 has any results. If yes, send an email.

I have rules that work, but I can't figure out how to schedule them -- it doesn't seem like they're triggered on anything since it's all about a view and not about node creation, etc. And if I trigger them on cron then every email will get sent out each hour (when the cron goes) instead of #1 and #2 going less often than that.

Thanks for any help --

(I get the sense that the Rules Scheduler is powerful and someday I will love it, but for now I can't for the life of me figure out what seems like a simple task.)