Are there any drug dealers near the property?

Just research online and usually there are a few used mobile home dealers in your state you can find on Facebook. 

ZERO I wonder why car dealers wont let you leave or call you a be back.. because no one comes back. same in RE or this type of RE sales were there are 50 markets to choose from and 100 folks to talk to . 

Gang activity, drugs, homeless etc.

if I did a drug, criminal, credit check on you, is there anything I should know?

Drug issues in the area?

That can include roof, water heater, HVAC, plumbing, electrical, mold, rot, warped floor boards, bad foundation, termites, sink holes, fascinating animal occupants, bad reputations (that was a drug house or had a fire or was used for other things that I don't want to mention), and so on.

You're coming from CA, so $350k is a drop in the bucket in your eyes, but in the normal world of RE, to pay $350k for a property and have drug dealing outside the property is not ideal.Florida is great for STR's.

Rent for POH x2 is 450/month4th unit empty and needs large renovation ($8k or so) or drug off. 

The $20 you gave him went to his favorite habit - cigarettes, liquor, drugs, cat food.