Rope soloing comes in three tiers, from simplest to hardest: top-rope soloing (the rope is fixed above you and two devices ride up with you), single-pitch lead rope soloing (the tail is anchored at the base and you feed your own rope and catch your own falls), and multipitch rope soloing (every pitch is climbed once, rappelled once and climbed again). Most devices' makers do not support self-belay: Petzl says the GriGri is not a self-belay device and forbids modifying it, and only a handful of devices are labelled for solo use. The baseline across all three tiers: two systems, backup knots, a test on the ground, and never changing your usual routine because you are in a hurry.
The AAC says free solo accidents are "almost always fatal" and usually happen on popular moderate routes: in December 2024 two people died on two consecutive days in Colorado's Flatirons, on a 5.7 and a 5.4, and one of them had soloed his route many times. Honnold says no soloist has fallen while pushing their limit; the AAC says familiarity lowers focus. The two don't contradict each other: deaths tend to happen in easy, familiar places. Rope soloing carries its own risks: the top-rope solo accidents the AAC recorded share a single device, no backup knot and a climber in a hurry.
Top-rope belaying comes down to five skills: tying a figure 8, the four-point partner check, PBUS with the brake hand always on the rope, clear calls, and smooth lowering. Taiwan has no national gym belay card; each gym runs its own. At T-UP Zhonghe, the beginner belay course is 5 sessions for NT$5,500.
Belaying outdoors adds five things: stand near the first piece, wear a helmet as belayer, read the terrain before deciding on a ground anchor, always knot the rope end to close the system, and agree before leaving the ground whether the climber will lower or rappel. In a decade of AAC reports, more than half of lowering accidents were the rope end passing through the belay device.
Top-roping wears gear faster than any other style, so the rope runs only through your own carabiners, never directly through shared rappel rings or lowering hooks. The simplest rig is one locking quickdraw on each of two bolts, gates opposed; REI's quad uses a 25-foot 7 mm cordelette and 4 locking carabiners. At Long Dong, TOCC asks you to always rig top ropes on your own gear and recommends retreating by double-rope rappel where possible.