I haven't used TacFit before, but I DO use www.militaryathlete.com. I've been at it for about 3 years now and have never been let down by these guys. Everything from various Selections, Range Fitness, to yoga-esque durability exercises. Everything is phased and periodized to maintain all areas while increasing in a targeted one. Rotate the cycle every 2-4 weeks and you've got a winning combination. Overall, the focus is core and lower body. Maintaining movements for 4 hours or more wearing 60-80 pounds of gear up and down mountains with short bursts of intensity throughout. PM me with any questions, brother.
Jedi Knight
The self-confidence of the warrior is not the self-confidence of the average man. The average man seeks certainty in the eyes of the onlooker and calls that self-confidence. The warrior seeks impeccability in his own eyes and calls that humbleness. The average man is hooked to his fellow men, while the warrior is hooked only to infinity.
