Another note or two. 1. The trim sending unit can be moved so that the trim reading on the gauge is different for each motor. On mine, I adjusted the sender so that at the normal trim setting for WOT, where the motor is exactly vertical, the trim gauge was dead in the center (this was an analog merc trim gauge with marks but no numbers). This made it easy for me to trim without thinking, and to tell anyone that was driving how to set it without hunting around for the sweet spot. 2. Rooster tail can be affected by trim angle. Too much trim wastes energy throwing the water up. But as you surface a prop as most do, the blades are going to sling water up anyway as one blade is always leaving the water. the higher you run the motor, the higher that tail will go, even when properly trimmed. My boat, running about 6500 RPM with a chopper tosses a pretty good rooster tail at 80+, even though the motor is trimmed perfectly vertical… Over trimming produces a different kind of tail however. Mine is very “misty” where over-trimming often produces a sort of “wall of water” effect… When my young son started driving, the rooster tail was the most important part to him. higher was better.2008 Pantera Classic2014 Mercury Pro XS 200
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