Lake boat
Either buy a boat or a plane.
I have hundreds of hours maintenance experience with these craft, and from that perspective, I would leave them to flat / fresh water.
I often found bent structure in the tail due to landing in chop and the worst fuel system contamination events just to name a couple.
Surprisingly, corrosion was not the biggest issue.
Each to their own I guess, but I personally would run as fast as possible if I was asked to repair one again.
Sorry to hear about your predicament.