I was sent an email recently asking for my opinion about what type of hooks to buy to use to hang boots from a rod. That is how I store a number of my boots. Hanging them by their bootstraps (or boot pulls) keeps the boots in shape, and gets them up off the floor and out of the way.
My opinion is that you do not need to purchase expensive hooks from a specialty store or even a retail home supplies store. Do what I have done: cut apart wire coat hangars. Those hangars are easy to find, and often are provided by a cleaner when having shirts laundered or dry cleaned.
All you need to do is cut the wire with a strong pair of wire cutters (or the cutter blade found on some good-quality pliers) and bend them to form hooks. You can make them as long or short as you want, customized to the length that may be required for a pair of boots that may have deeper boot pulls than others (such as sewn inside a boot shaft vs. leather pulls sewn over the top of the shaft).
No need to waste money on expensive products when making your own will do just fine, and is easy, simple, quick, and cheap.
Life is short: be practical and save money!