CJ is correct..
I, too, was paranoid the 1st time(last year,) I took my 232 Gulfstream to the Keys.
1.) As previous posts stated. wash the whole boat after your days run..Stainless, everything.
2.) Flush the engine internally. My 200 Four-strokes have an attachment that allows you to connect a dockside hose to it and run fresh water thru it while the engine is tilted up and turned off.
OR, tilt it up and attach those muff-devices to the lower unit and run water thru it that way while running the engine. Be sure, obviously to have an adequate water supply running to it before starting it up.
3.) Wash the outside cowling of the engine and as far down the lower units as your transom access allows you to reach while leaning over.
Cruise the canals of saltwater-land and you'll find many older boats. The interesting thing is that they're re-powered with newer outboards, probably 'cause they blew off proper flushing and cleaning and the corrosion got away from them.
Admittedly, it's a pain to do all that after every trip, but it really pays in the long run.
Salt sucks, but if you put in the extra effort the boat will be fine.
One thing Jimmy(don't ask) told me to do that was real helpful, was to spray a corrision-inhibitor-type spray on the wiring of the engine and around the inside with the cowling off. I think one brand is Boeshield T-9, or something like that. Have fun, that Adventure will go plenty of places in the big stuff, weather permitting.