Stelladog I don't see where I made any reference to Len Gruber nor did I say there were not good sea plane instructors out there.
My comment was general and applies to many flight schools.
So tell me how quickly can you get a sea plane rating from a good school, and what do you have to be taught to make you a safe sea plane pilot?
Specifically what do you think of schools that advertize one or two day sea plane ratings, what happens if you do not get the proper weather for the most important skill you need when flying sea planes?