Security Deposit vs. CSA Insurance

[Margie Fortune]

Hi,

We currently have a vacation home in Deep Creek Lake, MD that we rent mostly through VRBO but also have listed on AirBnB.

Right now, we charge a fee for the CSA insurance through VRBO but thinking of changing to security deposit.

With that said, how much is suggested for security deposit for a 4 bed/4 bath home close to a ski resort? Or do we stay with CSA?

For AirBnB, I don't see how to add security deposit?

Any insight/advice is most helpful.

Thanks!