I own a 2006 Outback DD and use it exclusively on the north shore of Long Island, New York. After a day out, the engine is flushed using a fake-a-lake with the Salt-Away attachment. In addition, we flush the trailer (galvanized) inside and out with whatever is left in the Salt-Away cup/attachment.

After flushing, we wash the whole machine and trailer with fresh water and car wash soap - liberally. The interior only gets wiped down with the sponges just to get the salt spray off, then wiped off with clean towels. Once a month, I shoot the entire engine/transmission with WD40.

The process takes 45min, plus a few minutes to wrap up. You'd never know we use this boat in salt water - the boat still looks (and runs) brand new

With a little common sense, these boats can be used in the salt water environment and kept in excellent condition, assuming they're trailered and tended to regularly after use.