Flush the engines when you pull it out of the salt and you will be fine. I flush my boat every time I take it out unless I am going back in the next day and sometimes I will wait. I use Salt-A-Way around every 2-3 flushes. Thoroughly was the entire boat inside and out including the bildge...you will be fine!
Make sure you have an anchor w/ chain and enough rode
Check the date on those flares!
Life jackets for everyone
Throw cushion easy accessable