Josh over at Pika Mountaineering makes these hooks about once a year, and I pull in a bunch, but... we run out at times. Three sizes are approximately the dimension of the reach in inches. One hole not big enough to clip a biner into, so use a short loop of webbing.

A versatile hook, perfect for your Imlay pothole escape kit. Three different hook heads fit small to large features, and the smallest one fits in 1/4 inch and 3/8 inch holes well. Tripod base for stability. I include a short sling of 1/2" tubular. Bring TWO for your next trip to Imlay.

Hooks are not generally useful for escaping potholes. If you are hooking out of potholes in Imlay, then you want two Talons. Hooking out of potholes is something people ONLY do in Imlay Canyon where there are drilled holes in place. There are a few drilled holes in Heaps too, though I have never used them. Elsewhere, potholes do not tend to have hookable features. This is not how you get out of potholes.

BD Alpine Aiders are a handy addition to the pothole escape kit, working well for hooking and for other methods. They can also be the best way to assist others out of a pothole. They are light and compact - much more so than "real" etriers. A lot less expensive, too. The side-to-side style of aider works better than the ladder style for pothole escapes, as a single aider can be used for both feet on non-overhanging terrain, unlike the ladder style.

And like many pieces of gear I like, it has been discontinued by Black Diamond as of S25.

The standard of handled ascenders! Works well, not too heavy, pretty strong. If you are looking for handled ascenders, these are the goods. When exploring canyons, exiting caving-style, or for rescue and SAR work, sometimes there is nothing like a real, handled ascender for getting up a rope.