If they evaluated the deal solely on cashflow, then you are already behind there too.Drop these numbers into the BRRRR calculator here and post the results.

…Then there are the Fee Collectors…C) Fee CollectorsThese individuals make most of their money by collecting upfront fees in the form of application fees, analysis fees, evaluation fess, preliminary underwriting fees, etc. etc.

I don’t know what questions to ask or how to evaluate.

I just want a way to do a quick evaluation.

Then I would keep the contact info for whoever evaluated the system. 

A camp ground has to be evaluated the same way you would with a hotel, trailer park, or even self storage; where both the value of the real estate and the business come into play 

You might want to get a few realtors out to evaluate market price to see if it's worth it to see now or wait.

You can further research the properties that they are pulling to generate their estimate to assess the quality compared to your potential investment.As Steve mentioned, the Bigger Pockets cash flow calculator is a good tool to evaluate the deal.How to find a good deal, analyze a lot of properties. 

If you use both methods, what is the deciding factor when evaluating your deals?

Evaluate it to see if it can be helpful in this case.Good luck