I've got a few agents I can recommend.

Any tips or suggestions? 

I'm ready to again take the next step and continue building my network.If anyone has recommendations for local real estate agents, tips for identifying promising short-term rental properties, or advice on securing financing as a investor, I'd greatly appreciate your input!

Is it advisable to try for sale by owner on Zillow or does anyone have any other recommendations to market this property?

if so what software would be recommended as easy to use? 

Make sure that your area states it directly.Otherwise, let the booking site handle things. 28 days isn't that long IMHO depending on the area or reason for traveling. 

As a real estate agent based in New York, specifically on Long Island, I'm eager to hear from anyone who has experience with BRRRR properties in this area or has valuable tips to share.

I sell my own properties so I make sure to go overboard on this.Also, put your property on the internet on other platforms, like Facebook.

I don't recommend throwing the baby out with the bath water, and definitely make sure you understand the nature of the Mentor you choose.BP is a great resource to meet some amazing people. 

I recommend that you forget Realtors...unless you are at the stage where you're ready to hire one.