Smart tabs seem universally agreed to do the business on the Warrior hull (when you get the right ones) but on the other hand, Doelfins are about a third of the price, don't involve making holes in the transom, don't compromise shallow launch or drying mooring scenarios and completely eliminated porpoising on my friend's 150, it runs beautifully flat and level.
FWIW, I'll be fitting trim tabs as I've got a set waiting, but not until after the summer expedition to Porlock where I have to sit on a drying mooring for two weeks...
Steve