Here is a photo of a road side view for perspective as well as a survey/topo.

Miguel,I just attended a class on this, and some of the suggestions that were offered in the class include: - direct marketing (using lists or the county tax records to locate owner of properties you are interested in)- newspaper ads- roadside signs- internet - targeted adsIt sounds like you are getting ready to start the driving/walking for dollars.

Many have absolutely no background in trades of any kind and would have a hard time changing a tire roadside.

I have tried to get as much information as I can.Looking at a roadside motel on a major road in a rural area.   15 miles away is a medium-sized college campus, and it's within 45 minutes of a big NASCAR venue, but other than that it is NOT a tourist destination - just rural area known for hunting, fishing, hiking, etc.   

I associate them with cheap, hourly, roadside Motels.  

@Estelle Lee  Unfortunately, the thing that initially appeared to be a big positive (roadside visibility) is probably the biggest problem. 25k cars per day is great if you're selling something but most renters don't want to live that close to that much traffic.  

Aside from Craigslist, roadside sign in front of park, local newspapers and online classifieds, any other suggestions on what has been effective to advertise vacant pads and recruit flippers?

Post a picture of the roadside when the Bluebonnets start to bloom this spring. 

The road side colors of yellow and black seem to work well.

I promise you no renter is going to care whatsoever about a car on the street or a little water on the roadside.