I am not aware of any of the local property management companies handling mobile rentals so you should check craigs list, vrbo and local papers to get an idea what kind of rent the property will generate. It is in a good location. Also check with the park management to check if seasonal rentals are allowed.
Bethany Beach, DE 19930
I have been in real estate on the Eastern Shore of Maryland and lower Delaware for 25 years. In my experience, mobile homes have not had the appreciation that other properties have seen, and you always need to be concerned about the future resale value of a property.
As to rental income, they are probably very affordable rental properties, so I am sure there is a market for finding that tenant. But again, you also need to think about the future value of any investment that you make, and this may not be your best choice.