Works good for me
Not sure what you mean by a small boat, but on my 18' outboard, the fins made all the difference in the world. Without it, I was bouncing like a porpoise. With it, the boat comes up on a plane much faster. I wish it had a bit more of an effect, but I'd highly recommend it. One consideration - when they installed mine, one of the screws went through the trimming skeg. If that happens to you, make sure the engine is well tuned before the fin is installed.
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