I think finding a network of people is the most powerful force multiplier for this type of investing. 

The relatively high leverage in many deals multiplies the effect of appreciation, on average.

Multiply the NOI of the property over TTM, ignoring all “adjustments” from sponsor.

You mention you have no experience in these types of parks and your first deal you want to take down 100.When I was working for a GC we did a condo project for a developer who never developed a building before and he sold his company (it company) and used the entire amount to develop real estate.He ended going bankrupt because his inexperience with his experience and his designers and every mistake they made was multiplied by 150 since that is how many units there were.

These benefits multiply the larger number of leases you can sign.

An easy way to calculate is to take the sales price and multiply by .97 (if there is a 3% seller concession).

Take that number and multiply it by 12% and that’s your allowance for marketing per deal  Take that number and divide it by your historical lead cost.  

That means you can distinguish your listing by being responsive and courteous while providing a quality product.To more directly answer your question, while there isn't a great website for MTR data, I do estimate MTR rents with either the BP rent calculator or rentometer.com's and then multiply by 1.5x as a screening tool.

Imputed value comes from taking the assessed value from the tax assessor and multiplying by the applicable factor that the PA Dept of Revenue has determined for that county and year.

They will work with the buyer to re-set the loan and terms because when they foreclose and bid the property in for their loan amount which they mostly do around here, they have to recognize the loss as a non performing loan which has a multiplier effect on their lending base.