FWIW ... ;)
I have a set of Fastway OneStep regular size chocks and IMO they're a PITA to use. :M The reason - many don't realize it but the spacing between any trailer's adjacent tires actually varies according to the surface on which the tires are sitting and how much weight each set of tires may be carrying at any given time. Tire spread will also vary somewhat when a slide is in the travel position vs when it's deployed AND will also vary as the tires cool over the course of the first hour after arriving on site. I never gave any of this much consideration when I bought these OneStep chocks but it's proven to be an incredibly annoying issue, so much so that I no longer use them. Yes, each set can be adjusted by removing a set pin and switching it to another set of holes but I certainly don't want to do that each time I set up just because in one case the tires may be sitting on a hard, flat surface but the next time may have sunk into soft sand quite a bit. Previously I used a set of BAL Standard Tire Locking chocks which were infinitely adjustable by simply turning the screw connecting the two tire pads together so any difference in spread from one situation to another was a non-issue.
Even when spread increased as the tires cooled it was a simple matter of giving each chock a quick couple of turns and they'd be snug again. Unfortunately I can no longer use these BAL chocks on my current trailer as they're still too long to fit between the tires even when adjusted to their minimum length. The only downside for those owning a trailer with spread axles is these BAL chocks are not available in an XL size as are the Fastway OneStep chocks. I thought the Fastway OneStep chocks would solve the narrow spread axle issue for me but in practice have found them to be FAR more trouble to use than they're worth and wouldn't recommend them to anyone. JMO.
