I've been doing this once a year for the last 4yrs or so. We take a trip to FL annually, and we've taken the boat a few times. In general a week in Salt Water if you're fairly active in fresh water hasn't shown us any unusually high wear or corrosion issues.
Get some Salt-A-Way and flush the engines, trailer, and rinse down the boat with it once you're out of the water. I usually do this the last day we're at the AirBnB. I bring my own hose and connections to make the process work. If you're in a hotel, or condo setting this is more difficult. It's not going to kill the machine if you don't do it until you get home. 2 of my trips have been that way.
Once you're home, give it a good bath and rinse with your favorite washing products. Dunk the trailer a few times in fresh water to let it rinse as best as possible.
Finally.....enjoy the amazing water down there. It's been worth the tow for us every single time. This was from Pensacola/Destin/Navarre in June of '21.
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