You can't move the property (although you can move the mobile homes themselves).Doesn't sound like an appealing deal to me at all, but you haven't addressed a few key points.

or  are these ancient pads made for when mobiles were 50' long?

@Jaime Topete mobile homes and condos are a good way to invest here locally if you don’t have a few 100k to put down.

Also you may want to invest in a mobile security system until the property has a tenant in it.  

My wife and I have had a mobile home rental for about 7 years now but unfortunately have only rented it out to break even and to pay mortgage, insurance and the HIGH Bossier Parish property taxes.

Today we have perhaps 2nd only to the housing boom of the early 2000s, the easiest access to capital in modern financial history.

Mobile Home Parks/ Senior Retirement Communities/ Modular Housing Communities are an extremely attractive investment opportunity.

Also, at least in Florida we have to obtain a special permit for an RV Park/Mobile Home Community.

They have a growing population, growing jobs in diverse, modern industries, above average labor participation rate and good median household incomes.

But I appreciate the solid advice, because nonetheless, I am new to real estate investing (just started my LLC last month) - the goal was to BRRRR mobile home parks basically, but I am having a hell of a time finding any good buys - everything I am finding so far was already gobbled up by investors and now being offered at premium.