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The wide-based, shallow-depth keels are built to provide maximum drive and projection, with plenty of hold and serious spring off the bottom for wide tail surf craft.
Run this on a wide-tailed fish, hybrid, or groveler with thruster boxes when you want keel speed and drive with more hold than a twin -- it is a thruster that still feels like a keel. If you want a conventional high-performance tri feel, or a two-fin keel's long drawn-out arcs, look elsewhere.
The Mackie Mini Keel Thruster is a three-fin set designed by Mick Mackie and made by True Ames in solid fiberglass, here in the FCS-compatible version. The two side fins are wide-based, shallow-depth keel templates with flat inside foils, and the rear trailer is a slightly smaller version with less rake and a shorter base. The set is intended for wide-tailed fishes, hybrids, and grovelers set up with three boxes.
A two-fin keel built for fast, drawn-out arcs; the Mini Keel Thruster trades some of that looseness for stability and projection.
The more conventional thruster if you want a true high-performance tri feel rather than a keel-flavored one.
