From my experience, the first years may be fewer properties and later they will come more frequently.

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As rents increase,  I purchase more/more frequent. 

You will hear many conflicting opinions, but there will be one that you hear more frequently than others.

I'm from Fairview but frequent Asheville.

I see that most millennials know about them and probably frequent them more, but the older generation(s) are just beginning to realize that they can stay at a nice home with a kitchen/laundry/etc for the same price as a sterile, unfriendly hotel with zero personality.We are getting many more older folks (50+) that admit they are brand new to the whole STR thing and they marvel at the concept, so I see this trend continuing and growing.

@Stacey Ocampo my brother and I each own an STR in BBL and also frequently go up with our families to them (we live in Vegas).

If you are traveling frequently for work, that property would still be considered your primary residence so will meet the occupancy requirements.

If you're looking for a quick lift, attend a local RE event as many lenders frequent those events specifically for the purpose of finding someone in the need of working capital. 

He wasn't there frequently enough, left a solo work hand to do the work most days, and refused to bring on more of a crew.