Most of that time is spent on my weekly visits to each location to make sure they don’t need trash picked up and to make sure the lawn or snow removal is being done correctly.

I have had some luck with MTR's as well, either direct booking or FurnishFinder, for seasonal workers, traveling nurses and snow birds, so thats something you can look into as well. 

It goes without saying that you should get the lease agreements as soon as possible so that you can have some transparency into the number of occupants, the rent, any agreements, utilities paid/not paid by the tenant, parking, storage, responsibilities like lawn/snow, expiration dates, special clauses, etc. 

Memorial Day to Labor Day will pretty much take care of itself, but adding in amenities like a hot tub and a sauna will help you draw in more traffic and bookings even when there's a foot of snow on the ground.Just to touch on the LTR option, I don't know if this would get you the kind of returns you'd be looking for to even cover your mortgage, let alone cover any maintenance/capex/management costs the property might require. 

That sure beats months of snow and 0 degree weather you see out east.

We have rentals in places that do not snow but are thinking of investing in Columbus, a place that gets snow every year. 

Triple Net leases allow the Landlord to pass Operating Expenses (primarily comprised of Property Taxes, Insurance, Common Area Maintenance, Snow Removal and Property Management) directly through to the Tenants of the property on a pro-rata basis. 

I am not sure how these saunas are good with snow and rain. 

While I don't do snow removal at my properties, I do have the lawns mowed on a bi-weekly basis at $40/cut.Maybe you've priced this out, and maybe the lawn is small and this falls in line.

You need to switch to properties that are…Less than 20-30 years oldHave stucco siding and tile roofsDon’t have tornadoes, hurricanes, snow storms, earthquakesHave very low property taxesDon’t have state income taxesHave very cheap insuranceI have an average repair budget of under 2% of rent, average vacancy of less than 2%, insurance is 3%, property tax is 5%, capex is less than 1%.