Belaying is the foundation of climbing safety. A bad belayer kills climbers. This isn't alarmism — it's documented by every serious climbing accident database. The figure-8 follow-through is the standard starting point for learning to belay, but it's just the beginning. Here's a complete guide to belay devices, techniques, and the judgment that makes the difference.
The Standard Figure-8
The figure-8 is the most widely taught belay device for top-rope and lead climbing. It creates a smooth rappel device, is easy to inspect visually for damage, and can be tied directly to your harness with a follow-through knot (the tail tied to the belay loop). The primary disadvantage: it doesn't provide the friction control of tube-style devices, requiring more hand attention during lowering.
The technique: after threading the rope through the figure-8's smaller end, the climber's end goes to the climber, the brake end stays in your brake hand. The brake strand runs through the device from below and exits your brake hand below the device. This is not negotiable: the brake end must always be in your brake hand.
Tube-Style Devices: More Control
Tube-style belay devices (ATC, Bug, Totem) provide more friction control than figure-8s, making them preferable for thinner ropes and lowering. They work by creating additional bends in the rope as it passes through the device. The technique is identical to figure-8: brake strand through the device, always in your brake hand.
Assisted-braking devices (Grigri, Eddy, Pilot) add a cam mechanism that arrests a fall automatically if the brake hand releases. These devices have dramatically changed recreational climbing safety and are recommended for new belayers. The critical principle remains: hold the brake strand. Assisted braking assists — it doesn't replace active belaying.
Guide Mode: For Multi-Pitch Belaying
Guide mode is a technique where the belay device is flipped upside down and attached to the anchor's master point rather than your belay loop. In this configuration, the climber pulls the rope through the device from above you, and the device auto-locks if the climber falls. This is essential for multi-pitch belaying from the anchor, allowing you to belay the second from above without tying in.
Guide mode requires an automatic-locking or assisted-braking device, not a standard tube or figure-8. The technique requires practice: releasing to lower requires specific hand positions and attention to the brake strand. Practice guide mode at ground level before using it on a real climb.
Lowering and Rappelling
Lowering a climber smoothly requires consistent brake control and communication. The commands are simple: "take" (climber wants to be lowered), "lowering" (belayer confirms), "off rappel" (rappeller is starting rappel). Lowering speed should be controlled — fast lowering damages the climber's back and rope. The belayer controls speed via brake strand friction.