So far, I'm leaning towards an underground pool since it can be used all year round, but if I find a property that has room for both, then I may try to incorporate both amenities since families and the older crowd are my preferred avatar.

Any advise on whether to or not to incorporate?

U only post your versions of this that supports your narrative... 

If it wasn't fraud but simple incompetence (and he lost the money), then that isn't a crime and your options are more limited.Your legal contract (and/or the state laws the entity was incorporated in...depending on where) most likely requires the sponsor to share books and records with you (so you can at least know what happened).

Finding STR viable properties and incorporating MTR strategy in slow months is what works best.Crystal Beach is an option as well as Palm Harbor - however a word of caution a lot of Palm Harbor is HOA and I would avoid that as well. 

Or are you going to keep trying to be right by continuously changing your narrative as people prove you wrong?

Your lying and misrepresenting the facts and reality to suit a narrative. 

Quote from @Jason Watson: I'd make the Activity be a dropdown... control the narrative.

I am familiar with a couple of CRM options that incorporate sales and marketing.

This video is informative, but I wish the narrator more emphasized the lethal voltages within one inch of his finger.