Gilligan has tired of working in the coffee shop and wants to follow his heart, hoping that the money will follow. Because he always has dreamed of a life on the water, Gilligan has decided to open a retail boat dealership. He expects that many of his sales will be credit sales. Please explain in reasonable detail the steps that Gilligan should take to protect his interests in the collateral in the credit sales that he makes.

Bonus if you answer this, you will get the brainliest.
- Please identify the type of security interest that Gilligan will create with his customers in connection with these credit sales.