Since they were still there we will continue with the Warrant of Possession. 

The property is being sold subject to: All taxes due the municipality not foreclosed by this action,Water and sewer use charges not foreclosed by this action,All building and zoning regulations of the municipality which affect this property,All building lines, easements, restrictions and all other matters concerning this property which appear of record,The rights of any person in possession or occupancy of the property who have not been made parties to this foreclosure action,The right of the United States of America to redeem the property, if applicable under Federal law,Any other liens on this property which have not been foreclosed by this action."

What are my options for taking adverse possession?

If you simply hold onto the property for ten years after the tax deed date, and maintain possession (usually by renting it out) then you are into old fashioned "color of title adverse possession" which is 10 years. 

It seems most (and I may be using that term loosely but it's my impression) lease to own and seller financed type MH deals end up foreclosed (seems some investors even plan and hope for that) so it ends up back in your possession just like a rental... except you got a down payment up front.I stayed away from MH, just couldn't get my mind wrapped around it right and my wife would have killed me based on her experiences growing up in one.

Deeds and other instruments; recording; when effective as notice; possession of real estate; not effective as notice; when.(1) Except as otherwise provided in sections 76-3413 to 76-3415, all deeds, mortgages, and other instruments of writing which are required to be or which under the laws of this state may be recorded, shall take effect and be in force from and after the time of delivering such instruments to the register of deeds for recording, and not before, as to all creditors and subsequent purchasers in good faith without notice. 

The bank possessed it around 2 years back and have been listing it since (As per zillow). 

Here’s an overview of each one, from the simplest and least expensive to the most complicated and costly.A note about wills: Whether or not probate will be necessary, Florida law requires that anyone who has possession of a will must file it with the local circuit court within 10 days of learning of the death.

Personally, I wouldn't do a thing until I had one of those in my possession.

:) It was a real bummer for me 'cause I was all set to take possession of my shiny new Model 3, and let my Mustang convertible make the payment via Turo... alas, could not figure out a way to make it work without leaving myself too exposed.