We have not had an issue with vacancy, nothing more than 3 months at time between new renters.

A good way to check this is to take a look at other MHPs in the area and see what their vacancy is.

I don't know about anybody else, but I am getting a huge number of "about to be single" applicants for my vacancies.

But, I've also had a tremendous amount of response for my vacancies as well.

Scenario 1I have a rental home where I set aside 35% of my rent each month for vacancy, repairs, capx, property management, etc.

How do you underwrite a property that is showing 20%+ vacancy?

Then gotta move forward with marketing and leasing, vacancy is a huge revenue killer, never want to encourage more than is necessary. 

Call Property Rental Managers in the area and ask about vacancy rates. 

I doubt the vacancy rate in your area is as high as 10%, but even if it is I suspect you will have a lower vacancy rate. 

For example, U.S. seller sells their 3/1.5 SFH for $90K to Chinese investor with the following terms:$26K down payment5.56% interest-only seller financing for 10 yearsFair-market rent is $1,000Total operating expenses (including property taxes, maintenance, management, insurance and vacancy) are about 41% of gross rental incomeChinese investor cash-on-cash return is 9.2% Chinese investor monthly cash flow is $294Depending on the kinds of returns your investors require, these types of deals could be structured to work with relatively low initial investments.