A lot of land is sold on owner terms..

It's likely a scam anytime they sound like AI or the grammar is weird or they use the word "kindly", if they ask for you to respond to them off-platform, if they say their employer will pay for it, if they ask if the dates they've specified are still open (when they can clearly see they are open on your calendar), if they ask for a video of your property (they probably want to set up a duplicate listing with your photos and video and scam others out of money), or if they want a long term booking and they have just joined the platform and have no reviews (could have been evicted from somewhere else, and hope a newbie will let them in with no background check, they'll end up not paying or credit card is bad).  

I would assume a greater emphasis on quality of materials and workmanship (and consequently higher rehab cost) for a rental where the investor will have to deal with the longer term implications of any corners that were cut.

What are some terms that would appeal to an investor?

I’m an ex realtor who also has some experience working for a private equity group for a short time before I got a really good gig in a completely unrelated industry that will allow me to have options when investing.

Than you set out, per the strategy, to get a "deal" under contract. 

Prepayment penalties- usually 1-5 year terms.

Seems like you're just a marketer working on a contract basis (not that I'm defending the program or even saying it's legitimate).

I also suggest you post your listing to "Short Term Rental Listing Advice" on Facebook and let them give you more feedback as well.  

. :-) back in the day and not a big deal flow.. and all land contracts on bare land.. to put it in perspective. :)