Chain tension checks on flats

When we pick up a string of lumber flats out of Pasco at 02:30 and the first roll-by shows a couple binders that look a hair loose, what’s your go-to tool for verifying tension without reworking the securement — ratchet binder with a 24" bar and a 150–200 lb handle pull, a spring gauge, or something else that works in 15°F? I’m trying to keep things snug enough to ride the slack across Stampede without crushing chocks or overstepping OTLR, so I’m curious what’s been practical for you.

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I carry a 100 lb spring fish scale and clip it mid-span; in the cold I pull for “50 lb for 1/2 in over 24 in” — if it hits that, I don’t touch the binder and keep moving. Lumber settles quick out of Pasco, so I plan a recheck at the next roll-by; you running 3/8" G70 or G80?

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