Just heard another national television fishing celebrity refer to the water as being “16 foot” deep. People it’s as simple as “singular” (one) vs “plural” (more than one). If you are referring to more than one (plural) then it’s FEET. So it would be “16 FEET” deep NOT “16 FOOT” deep. Your boat is “A 16 boat” (“A” is singular”) but, it is “16 feel long”(plural). Sorry for the rant…kills me that the leaders in the industry that I love (fishing) do this every day. Help the next generation to be better.