The Stack System

Founded 2021 · Canada

Tech & Training Aids

#147

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The Stack System launched in 2021 as a data-driven speed training program developed by biomechanist Dr. Sasho MacKenzie, whose research into speed development influenced modern golf training methodology. Unlike traditional swing speed programs that rely primarily on lighter-and-heavier club protocols, Stack combines progressively weighted training clubs (ranging from 175 to 285 grams) with Bluetooth-connected sensors and proprietary software that tracks every swing, providing real-time feedback and algorithmic training progression. The system emerged from academic research showing that optimal speed gains require specific loading patterns and recovery periods that most golfers couldn't self-program effectively. Stack's training protocol typically runs six weeks with four sessions per week, each lasting roughly fifteen minutes. The software adjusts daily workouts based on measured performance, fatigue indicators, and progress tracking, essentially functioning as an automated coach that prevents overtraining while maximizing neuromuscular adaptation. Early adopters reported swing speed gains averaging 5-7 mph, which translates to roughly 12-18 yards of driving distance, though results vary significantly based on baseline speed and training compliance. The system gained credibility through adoption by tour professionals and college programs, with several long-drive competitors using Stack protocols in their training. The brand operates primarily direct-to-consumer with a premium price point around $500-600 for the complete system, positioning it as a serious training investment rather than a casual training aid. Stack competes with SuperSpeed Golf, Rypstick, and SwingMan Golf in the speed training category, differentiating through its data integration and algorithmic programming rather than just weighted implements. The company has expanded beyond the original system with Stack Ultimate, offering additional weight options and advanced analytics for serious players. Industry observers view Stack as representative of golf training's shift toward quantified, technology-mediated improvement programs that promise measurable results over feel-based instruction.