It could be CYA but it's possible for the block to roll if there's lateral pressure on the trailer tongue. It depends how they're stacked, I'd think. A low, wide block or stack of flat blocks seems less likely to roll. A stack of 4x4s on edge definitely could.
Common sense comes to mind but common sense isn't common, it's learned, and not everyone has the same knowledge and experience.
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TV: 2021 Ford F-150 4WD XLT Crew w/ 3.5L EB & HDPP, payload: 2,416#.
RV: 2020 Rockwood Mini-Lite 2507S, Propride 3P hitch w/ 1400# spring bars
Camping nights: 2021, 52; 2022, 99; 2023, 88; 2024, 57 YTD 8/18, EOY est., 90+
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