Well I hope that etec holds up for you to me for the most part engines are mechanical equipment that is ran in saltwater. Some will never give you problems no matter what brand and others will just the way it is. Just cause one person has all kinds of issues doesn't mean you will.
I fish mainly freeport and Matty area myself and my motor lives in the mud it doesn't know how to act when its in pure water LOL
I fished Corpus this past weekend prefishing for the XRT and still found lots of nasty mud to put her into GO FIGURE.

Going back this weekend to look around some more.