Introduction to the Calking Drill
This solo drill develops foundational foot-stomping technique, a historically significant combat method from rough-and-tumble fighting. The drill builds the fundamental mechanics that practitioners will employ throughout their training.
Historical Context: Calking and Lumberjack Combat
Calking refers to the iron spikes attached to lumberjack work boots, which became weapons in historical combat. The practice of 'putting the corks in' was ubiquitous in old logging camps and evolved into a primary striking method in street fighting and rough-and-tumble wrestling.
Cultural Significance and Daily Practice
Lumberjacks wore calked boots continuously, even in towns, making them integrated into daily life and combat. The prevalence of foot-stomp attacks was so widespread that 'lumberjack smallpox'—scarring from spike wounds—became a recognizable sign of street fighters.
Foot Stomping in Combat Strategy
Foot stomps appeared consistently in historical fighting documentation, typically accompanying lunges, takedowns, and close-quarters exchanges. This technique served multiple tactical purposes: pinning opponents in place, compromising ankle mobility, and setting up upper-body techniques.
Equipment Setup for Solo Drill
Two standard heavy bag gloves are positioned on the ground to represent an opponent's feet placement. No filling is necessary at this initial stage, though advanced progressions will involve weight modification to develop power generation.
Integration with Forward Movement
The foot stomp must be synchronized with entry techniques such as jabs, falling steps, and directional shifts. Practitioners should rely on peripheral vision rather than direct eye contact with the target, maintaining focus on upper-body technique while the stomp naturally accompanies the forward motion.
Execution and Follow-Through
Upon contact with the target foot, the striker maintains ground contact rather than stepping off—this is called 'dead footing.' Practitioners may apply secondary stomps from the same position to generate momentum that compromises the opponent's ankle stability and mobility.
Progressive Drill Practice
Over multiple rounds, practitioners alternate between lead and back foot stomping during forward entries. The objective is consistent target acquisition and hard contact with every entry, developing automatic integration of foot strikes into boxing and close-quarters combinations.
"Calking" (Foot Stomp) Drill
Key Takeaways
- •Introduction to the Calking Drill
- •Historical Context: Calking and Lumberjack Combat
- •Cultural Significance and Daily Practice
- •Foot Stomping in Combat Strategy
Mark Hatmaker demonstrates a solo "Calking" (Foot-Stomp) Drill. Details and drills at http://www.extremeselfprotection.com
Frequently Asked Questions
What does this video teach about foot stomp?
This video covers introduction to the calking drill, historical context: calking and lumberjack combat, cultural significance and daily practice. It provides detailed instruction from Mark Hatmaker.
How long does it take to learn foot stomp?
The basic mechanics can be understood in a single session, but developing reliable execution requires consistent drilling over weeks of practice. This 8-part breakdown helps structure your training by isolating each phase of the technique.
What are the key details for finishing foot stomp?
Upon contact with the target foot, the striker maintains ground contact rather than stepping off—this is called 'dead footing.' Practitioners may apply secondary stomps from the same position to generate momentum that compromises the opponent's ankle stability and mobility.
Related videos

Wing Chun - Stomp Kick From Chi Sao
Elite Academy of Martial Arts, GA

Martial Arts Foot Techniques | Striking Surfaces for Kicks
Barbell Black Belt

Charles Oliveira's System for Attacking from the Guard in MMA | BJJ Breakdown | BJJ For MMA
BJJ For MMA

Stomp to the Face! Kyle Jensen vs Mike French
Kyle Jensen MMA

Basic punt
Ken Meinhardt