My responsibilities included construction and contractor management and overseeing the asset's successful marketing and sale.

All Homevestor franchisees are good at generating leads (they have an excellent marketing template) but like most wholesalers they generally stink at any "after sale" service like helping with tenants, repairs etc.

looking for suggestions on best methods/websites for marketing a long term rental.

Your experience with listing the property for sale in a high-interest market highlights the importance of market timing, and it's great that you adjusted quickly by renting the property instead.

On that campground, we have a conditional use permit (CUP) and have been approved by San Bernardino County by land use services to modify the prexissiting CUP with some additional units, dry to wet campground, pool, gazebos, utility building, etc. it’s a big project.

If you want to network or ask specific questions about your local market, go to your local real estate forum and connect with investors from your area: https://www.biggerpockets.com/forums/86-local-real-estate-networking5.

I am worried that my property expenses will leave me in the red because of the current costly housing market.

The increased pressure on the housing market may mean landlords see a greater number of applicants with difficult rental histories.However, all is not lost.

Unsure how market will play out with elections. 

Reciprocity is key to building lasting relationships.As you look to expand into short-term rentals (STRs), research the market thoroughly, understand local regulations, and consider whether you want to handle property management yourself or hire a professional.Remember, growing a real estate portfolio takes time and persistence.