@MontereyJack,
With winds around 10 miles an hour, and gusting to as much as 15 m.p.h., the weather conditions in and around the lake most likely would not have caused the boats to sink.
Actually, other boat parades to display support for Trump have taken place this summer. And today, there's
Nation’s Capital Trumptilla Boat Parade and Rally.
Quote:will the media report it? I doubt it.
Source for above: longer reports in the WP and NYT. (Online and print editions)
Edit: there are reports in European Sunday papers as well.