Bill: don't worry Capt Bill and I engage in debates from time to time but usually wind up close. Some day we will have a beer and get it on.
While I agree that WOT for ten minutes is within many specs it is important to note that makers are tightening those specs and today after too many warranty claims and are very specific about being able to hit or better, exceed rated WOT as a precondition to running heavily loaded. There are really only two reasons for running WOT at sea trial. Testing propping and testing cooling. I don't run my boat hard and don't expect a salesman or surveyor to do it either. The next owner can do what he wants.
I preach a bit on these topics because thee are so many myths about diesels among boaters, salesman and surveyors.
Nobody reads the conditions part of the ratings pages. Ever wonder why some ratings are for limited time operation per year and others unlimited? the Reason is warranty and meeting customers expectations. Joe sport fish wants to squeeze every pony out of his engines all day long and who cares if parts fly off. Well the maker does because his reputation will be killed by dock talk and airplanes pulling banners over boat shows. Commercial operators need to run at WOT for long periods so guess what; the engine is derated, they put a block under the gas pedal so the kids cant bust the engine before its time. Once the warranty is up of course they don't care what you do.
First ones on me.