It looks like there are about 1,200 listings in the "Village of Four Seasons" section near the Bagnell Dam.The entire area rates really low for seasonality, so you may consider how much a week in the summer will actually cost you if that's your "break-even" time.Happy to give you more data if you're eyeing a specific property or ZIP code.

You want to know where they have studied, how often have they done that procedure, how amazing is their success rate etc. etc right?

You may end up paying a higher interest rate on a higher payment. 

Short term gains are taxed at your ordinary rate.Active income, though, is always taxed at your ordinary rate.

Is there a difference in rates or process?  

Inventory is up, transactions and mortgage applications are up, mortgage rates and prices are generally flat. 

Rental Amount: Charge "normal" market rates, higher?

This also has the benefit generally of paying a lower marginal tax rate throughout your years of saving for retirement.

Here's a bit more in detail about how rates are calculated for DSCR loans:1.

Right now, this strategy will not work because rates are so high that you would have to really take home a windfall for the appreciation to get you down to no money in.