I was thinking of putting in a yard post like the realtors use with the plastic box with information (rental criteria) and the phone number to call to get an application.Has anyone done this?

I have had several people lined up for viewings this entire week (I took advice from others the last time I listed my other apartment and really screened people prior to inviting them to see it, which limited the amount of overall people...thanks!) 

Sometimes a phone call may clear up some questions you may have.  

Management is key here to screen the best tenants and manage the tenant.  

Find/Get a local and experienced Team put together that are good and will return your phone calls.  

I sent the email, and almost immediately my phone rang, so again, I let it go to voicemail.

., who answer their phone and get things done when I call them.

Do you want to be ahead of guideline changes limiting your acquisition opportunities, or risk getting that "oh sorry Mr Smith it looks like guidelines changed, loan denied" phone call?

@Lelith Walker and @John Morgan phone apps are a great resource. check out "invest home pro", "Joist", "home inspection checklist", they are pretty cool. 

I did some things right with that first rental (scheduling an open house instead of individual appointments, for example, and screening applicants) but there's definitely room for improvement.