ASA and PSIA Instructor
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I think the OP is referring to a horn cleat as a "dock cleat". If so, the horn cleat is certainly the most traditional means for securing sheets, although racers may like clam cleats. Cam cleats for sheets are common on smaller boats, especially one designs., and often for the mainsheet when used on a block tackle.
For sheets used with winches on a non-racing boat, stick with the horn cleats installed by the builder...
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