Fresh water is a little drive but Tampa Bay is 3 miles away .. salt water???

[gsxrjtt]

So i dont live on a lake and about 25 min from closest ski lake.. But Tampa Bay is 3 miles away from me... I have an 85 S&S... i know most boats cringe at the sight of salt water.. But just want to do some leisure boating in the bay or around it in areas.. Is this a complete bad idea for these engines ... or just use the same.. wash, rinse, flush and repeat method ???