To find free abandoned sailboats, go down to a local marina or boatyard, and see if there are any boats that look abandoned or like they haven't been used in a long time. Ask the staff about these boats; if they are truly abandoned, get the owner's information to find out if you can take the boat. You can also ask if the boatyard has confiscated any boats due to back rent charges and hasn't been able to sell them.
Sometimes, marinas might allow you to take a confiscated boat for free if you sign a year's slip lease. Boat owners who no longer use their boat may also ask you to pay overdue rent charges at the marina or boatyard. In addition, consider posting advertisements online or on marina bulletin boards saying that you are looking for free or cheap boats. You can also look through advertisements on websites, such as Craigslist, to see if anyone is giving a boat away for free.
If you were unable to get the information about the owner of an abandoned boat from the staff of the marina, write down the state registration number of the boat, and check the state registration records online. However, keep in mind that you might not find information about the owner in some states. Before agreeing to accept a boat and paying overdue charges for it, inspect the boat to make sure that it is not going to require too much money to repair.