I heard it as: "If you're considering buying a boat, step into the shower, turn the water on, and stuff $100 bills down the drain while you get drenched. Same experience."
You can buy a seaplane and get the worst of all worlds.
damn this thread single handedly destroyed all three of my dreams: owning a early 00 private jet, a 90s seaplane and 80s yacht. ALL of which were very much the focus of my day dreams!