Originally Posted by Mollers
Don't worry. Gotchiguy's pics are so big they stretch halfway into Ebay.
But seriously, our boat has trim tabs and we find them a real help, most of the time we have them on with two stages down, (a tiny bit) and into a chop up to say 3ft they are fantastic at smoothing the ride, and keeping the nose in the water. When it get a little rougher though, it becomes a game of balancing this smoothness with how wet you're prepared to get. You get ALOT wetter when the tabs are down, and its just a case of balancing it out. Often we leave them turned off and let the hull do its work.
Another benefit is that you can get on the plane quicker: in a large harbour (of drying moorings) the speed limit is around 10knts, and in the flat calm conditions of a harbour it is possible to use the tabs to get on the plane at around 12 whereas it would usually be around16-18knts.
The final benefit is in a very large head sea, ie swell/waves over ~2m they enable you to hold the nose right down and stop any little jumps at all.