Well,
I had them installed on my 2004 209.
I am going to put the boat in the water for the first time this weekend.
The mechanic at the Marina, not the same guy that installed them, said the trim tabs worked great when he was testing the engine.
Anyway....they look great....I will let you you know how they work. By the way, the kit + installation was $900.
The guy that installed them said they aren't mandatory but they really do help on those ruff days OR when you have a load of people on board.
Doug