The key to tent peg holding
Simulated field testing confirms that considerable force is required to completely dislodge a tent peg from reasonable holding ground with a steady direct pull on the tent guy line.
In practise, however, the important issue is NOT the maximum force that the individual tent peg can withstand before it is completely dislodged from the ground. The critical stage is reached much sooner – when the first tent peg in the system initially flexes or bends (normally well within the elastic limit).
With conventional tent pegs, that can occur with quite low forces (moderate winds). Even a small amount of this "flexing" introduces "slackness" into the entire tent support system.
Whereas a taut guy line system will sustain against substantial wind, buffeting of a slackened system causes fluctuating forces in the guy lines of greatly increased magnitude.
Other pegs are then subjected to higher loads and they also flex, creating even more slackness. Guy lines begin to “flog” and the magnitude of the forces applied can rise above a tent peg's capacity to resist – resulting in a deformed and/or dislodged tent peg. Tent collapse follows soon after.
A bend resistant tent peg dramatically improves the tent’s security by substantially increasing the amount of guy line force required to create the initial flex. The "stiffer" tent peg is much less inclined to flex. Guy lines remain taut in conditions of much greater wind velocity – the tent is significantly more secure.